Twilight Sparkle had just finished her studying for the night, and decided to hit the hay (pun intended.) She went up the stairs and into her bedroom for a well deserved sleep. Right as she got comfortable, something crashed downstairs. Instinctively, she turned her head towards Spike's bed; expecting him to be the cause of the noise. He was still asleep. Now in a panic, Twilight quietly went down the stairs to see what was happening. She looked around the corner to see a shadowy, unicorn-esque figure. From what Twilight saw of it, the figure appeared to be about her height. The figure's horn lit up, and books across the shelf were being pulled out and pushed back. Was it looking for something? Books were blowing past it's face, opening as the figure's horn illuminated the pages. The figure's magic abruptly stopped, as it slowly turned it's head in Twilight's direction. Quickly, she backed around the corner, hoping the figure didn't see anything. Her heart was pounding. The unnatural silence of it all just made her heart pound even more. Twilight took a deep breath, and looked around the corner. The figure was gone...? There was a bright flash from above Twilight's head. She didn't even have time to say "oh buck" before she was out.
"COCKADOODLE DOOOOOOO!" Pinkie Pie yelled, jumping up and down on Twilight's bed. Without thinking, Twilight screamed and flailed her hooves allover the place. One struck Pinkie Pie, and sent her off the bed. "Get up sleepy head! We're going to be late!"
"Late for wh--"
"OW!" Spike interrupted, Pinkie Pie landed on his tail.
"Oh no! I'm so sorry Spikey!" Pinkie Pie yelled as she jumped off of Spike. She reached into her saddlebag (that Twilight hadn't noticed earlier) and pulled out a cupcake, and neosporin.
"It's alright Pinkie, I'm fine." Spike said as he stood up and brushed himself off. Pinkie pie seemed so much more jumpy today.
"IDEA!" Pinkie yelled "Let's take Spike too!" Pinkie reached into her back and pulled out a leash. But rather then wondering why Pinkie carries a leash, Twilight just asked:
"Where are we going?"
"You don't remember? We're going to help Applejack deliver apples to Canterlot!" Pinkie responded. Twilight had no recollection of scheduling such a thing; but it's Pinkie. Best go along with whatever she says.
"When are we leaving?" Twilight asked
"About an hour or so. You were the one that told me to gather everypony...Did you eat another rotten apple or something? Honestly..." Pinkie Pie jumped out the window, and before Twilight could react, Pinkie Pie was floating back up in a hot-air balloon.
"I'm off to go get Rainbow Dash, then Fluttershy! Go let Applejack know we are on our way! Rarity should already be there!" Pinkie Pie flew out of view, and Twilight got out of her bed. Spike and her exchanged "What the Buck?" glances.
"Well Spike... Looks like you and I are going to Sweet Apple Acres."
"Oh alright. Can I put on my mustache?"
"No"

Twilight started walking down the stairs, then stopped abruptly as she saw the bookcase. "Was it all a dream?" she thought to herself.
"Twilight? You alright?" Spike asked; noticing her not-so-dramatic pause.
"Oh nothing... I just...had a little nightmare last night, that's all."
"Not again... Those night-mares are always causing trouble."
"No Spike, just a bad dream. Besides, everypony knows night-mares don't exist."
"Oh...right..." Spike apparently didn't count as 'everypony.' Twilight walked over to her bookcase and started looking through them.
"Well, if we're going to Canterlot, I should probably bring a book along with me."
"Which one are you going to bring?" Spike said as he made himself a sandwich.
"I don't know..." she said as her eyes glazed the bookcase. "The Art of the To-Do List! Perfect! Now where did I put it?"
"Don't you think it'd be easier to use the floor as a shelf?" Spike asked.
"What?" Twilight asked.
"You know, have all the books on the floor as one big shelf. It'd be easier to find stuff." Twilight ignored him and kept looking around the shelf.
"Oh! There it is!" She pulled it out of the case and put it in her bag.
"If we're going to be helping Applejack a to-do list will be very important. Organization is a key blablablahblahblahblahblah" Spike stopped paying attention, and focused on his sandwich. He had taken his last bite when Twilight was at the door and said "Come on Spike! Let's get to Sweet Apple Acres!" She magically lifted Spike onto her back, and closed the door behind her. Soon enough, they were at the Apple Farm. Applejack had bucked a basket full of apples when she spotted them, and walked over to greet them.
"Glad you could make it!" she said as she reached out to shake Twilight's hoof. "Thanks for helping me do this. It's going to make this job a whole lot easier with more ponies helping."
"Can you explain what we are going to do again?" Twilight said as she returned the gesture.
"Well, Celestia is having a celebration tonight, and she wants lots of fresh-grown apples. She asked if I wanted to cater the event; and well, you just can't turn down the princess!" Applejack laughed as she reached down to pick up her baskets of apples. "She's going to pay a lot for 'em too. We could finally build that extra chicken coop."
"Well, I'm glad I could help." Twilight said, but then she looked around. "Wasn't Rarity supposed to be here?"
"Ms. Prissy Pants ran off...she stepped in some mud or something. I think she's still inside washing her hooves." Pinkie Pie landed in the field, dropping off Fluttershy.
"Where's Rainbow Dash?" Twilight asked.
"Oh, she wanted to fly herself here. She mentioned something about taking the long way through. She should be here in a few minutes."
"I'm heeeeeeeeeeeeeeeere!" Rarity said as she greeted the rest of the group. "Can you believe someponys leave disgusting mud all over the ground? Beautiful Unicorns could step in it, and soil their perfectly perfect coats! Oh, and imagine what would happen if it got in their hair--"
"Ah yes, Celestia forbid mud at a farm run by Earth ponies." Applejack interrupted, with very blatant sarcasm. Rarity just 'hmphed' and flipped her hair. The group laughter was broken by the sound of screaming coming from above. Rainbow Dash crashed into a pile of rotten apples...at least they were soft. Rainbow Dash climbed out of the pile, and brushed some 'smoosh' off of her.
"Trying out a new trick again?" Applejack could barely get that out without laughing.
"NO!" Rainbow Dash replied with a bit of frustration in her voice. "Well...maybe at first yes; but these stupid birds--"
"bird's aren't stupid" Fluttershy whispered under her breath. Nopony had heard her.
"I was about to perfect my triple-flip spin-wind when this flock of seagulls came out of nowhere! Next thing I know, one of them hits my left wing and sends me crashing into the Everfree forest! But being the super-ultra-extreme-awesomazing flier I am, I had barely managed to adjust my trajectory to avoid that creepy forest by landing here; on purpose!"
"Whatever you say Sucarcube."

They all helped Applejack load the cargo train with the apples, then loaded themselves into the passenger sections. For a while, they all just talked, and reminisce about their previous adventures. Some details were obviously exaggerated, but it was all in good fun. Soon enough, Spike started getting sleepy; he is a baby dragon after all. Twilight carried him to the back where he could sleep in peace. She was about to close the door, but she felt a motherly tinge compelling her to stay with him. She sat down in the chair near the bed and began to read her "The Art of the To-Do List" book she packed along. Twilight got to about chapter four, when the train came to a stop. Applejack knocked, then entered the room Twilight and Spike were in.
"We're here! Grab your things and let's get these apples catered!" Applejack left the room, and gathered the other ponies. Twilight could see them gathered out her window; all talking and laughing with eachother. She nudged Spike.
"Five...more minutes..." Spike grumbled. Twilight of course didn't grant his wish. She picked him up and set him on her back. She exited the train and grouped with the other ponies.
"Let's unload this thing" Rainbow Dash said, feeling confident in doing it in ten seconds flat. Applejack opened the cargo train, and everypony helped unload barrels of apples. Rarity and Twilight were of course using their magic; they could lift a few at a time this way. The pegasusususus Fluttershy and Rainbow Dash were carrying them by hoof; although Rainbow was going much faster. Applejack carries them as she always does, on her sides. Spike, was still asleep. Eventually, all the barrels were unloaded; and the train rode off. Pinkie Pie mimicked the loud "whoo-whoooo!" the train made, and then kept mimicking it the whole way to the castle. A royal guard directed them to the Grand Ballroom, and instructed where they could set up; he pointed his hoof towards a closet and said that there are decorations and tables in it. He also directed them to the nearest kitchen, if they needed to bake anything. The chef's said they'd be happy to help with anything they could. Pinkie Pie and Applejack stayed in the kitchen to make some sweets. Rarity had stayed back in the ballroom to decorate. Rainbow Dash grabbed Fluttershy and flew off somewhere, probably to the Wonderbolt's stadium. Twilight Sparkle on the other hand, went to see the Princess. Spike's firebreath has been a bit over-used lately with the whole "everypony can write letter's now" thing. And even though Spike said he could handle it, and that it was no problem; Twilight insisted she let him rest and could deliver the letter to the princess by hand--err, hoof. She asked a guard for directions to the Royal Chambers, and of course was denied. Spike still on her back (asleep,) Twilight decided to explore on her own. She'd been to the castle many times, but it seems everytime she comes it's a different place. Twilight was going to admire the library, when Princess Luna's left wing accidentally bumped into her.
"Oh, my apologies Twilight, I'm in a bit of a rush." Princess Luna said as she closed her wings.
"No problem princess. What's the hurry?" Twilight asked.
"It's nothing much, but I heard someponies broke into the Wonderbolt stadium. At first they were causing mischief; but other ponies showed up and enjoyed the show. They say the blue pony with the rainbow-mane is really quite amazing."
"Well, that's Rainbow Dash for you..."
"I want to see this for myself. I hope she'll still be there by the time I arrive."
"As long as their's an audience, I'm sure Rainbow Dash will be there."
"It was nice seeing you again Twilight!" Luna said as she continued her exit.
"Same to you Princess!" Twilight replied, unsure if Luna heard her or not. Twilight continued towards the library, and opened the door. "I swear, this library get's bigger every time!" Twilight said out loud, not anticipating on anypony but a sleeping Spike overhearing.
"It really is quite amazing, isn't it?" A soft and majestic voice called from the corner. Princess Celestia revealed herself, and Twilight offered her the letter. "Thank you" she said as her horn lit up, teleporting the letter somewhere else. Probably back to wherever she keeps the others. "How are you enjoying your stay so far?" Celestia asked.
"Oh it's going great. Rarity is in the ballroom decorating. Fluttershy and Rainbow Dash are at the Wonderbolt's stadium, and apparently started a show. Pinkie Pie and Applejack are in the kitchen baking apple-treats for your celebrati-- Hey, what's this celebration for anyway?" Celestia got quiet for a moment, deep in thought. "Princess?"
"Oh" Celestia said as she snapped back to reality. "It's... nothing special...Just you're average Celebration." Celestia blinked a couple times, and started leaving. "Well, I'm off to go do some boring diplomatic stuff, enjoy your time in the library."

Even Twilight Sparkle knows Princess Celestia has a world-renowned poker-face. Celestia is hiding something.