(WIP 31/08/2013, lemme know if this is sounding like what you had in mind.)
 
"Here we are."
>Princess Celestia's alabaster horn lights up again, and the elaborately embellished oaken door swings open
>...That's gonna take a lot of getting used to
"After you."
>With a nod, you step into your new room...
>...And stop
"Wow."
>Royal purples and cobalt blues, gold and silver trim, a four-post bed, enormous windows, fancy everything everywhere
>"I trust you find everything to your liking?"
"Wow -- I mean, yes! Definitely, Princess! This looks great!"
>You break from gawking and turn to see a genuine smile on the winged unicorn's face
>"Splendid! Now, if you have no more questions, I'll leave you to get settled in. If you need anything, please don't hesitate to ask any maid or butler in the hall."
>Servants! You have servants!
>You bow in gratitude, trying to muster some dignity
"Thank you, Princess."
>"Just Celestia is fine, Mr. Anonymous."
"Right, right. Celestia. And please call me Anon."
>"Very good, Anon. I'll see you for dinner?"
"Yes! Er, yes, that would be lovely."
>"Excellent. Until then, Anon."
>With another heart-warming smile and a nod of farewell, the SUBLIME QUEEN OF ALL THE MAGIC PONIES leaves
>After a few moments of slack-jawed musing on how awesome and great magical horse people are, you set about your assigned task of "settling in"
>Shrugging off your backpack -- your lone Earthly companion, apart from your clothes and the meager contents of your pockets -- brings the reality of your situation back into stark focus
>You're trapped in a land of hypercolor horses...
>...But all it takes is a glance around your luxurious new digs to get smiling again
>It could be a /lot/ worse
>You unzip all the pouches and dump your backpack onto the velvety bed
>Apart from a couple of books, all you have is random odds 'n ends: an empty mechanical pencil, a few dry pens, miscellaneous paper scraps, a candy wrapper...
>...And an old box of candy hearts
"Heh"
>Regardless of how long it has probably been in there, you can't quite bring yourself to throw it out, so you set it on the nightstand
>You interrupt your tidying when you hear the clip-clop of an extra set of hooves from somewhere down the hall, followed shortly by voices
>"Auntie!"
>"Cadence, dear! You're back so soon! How did the negota..."
>Drat, they walked out of earshot
>...Not that you were eavesdropping or anything
"Oh well."
>You go back to looking for a trash can, but are quickly distracted by all the shiny
>After a few minutes of ADD, the faint voices and clip-clop of hooves return
>"--es, he's just down this hall."
>"How exciting!"
>Wait a minute...
>"He's quite the gentlecolt; I'm sure you'll like him."
>They're coming back this way!
>You sweep the bits of detritus off the bed and back into your backpack just in time for--
[knock knock]
"Come in!"
>In walks Celestia, with a shorter and more colorful winged unicorn in tow
>"Anon, allow me to present my niece and head of the Crystal Empire, Princess Mi Amore Cadenza."
>The eye-rapingly pink pony curtsies
>"Please call me Cadence."
"It's an honor to meet you, Princess Cadence."
>You bow politely in turn, and she giggles
>"Oh, just Cadence is fine."
>These royal ponies and their lack of formality... What's the point of being royal?
>"Aunt Celestia has told me about the magic accident. I'm so sorry you were caught up in that mess. I can only imagine what you're going through."
"Well, it /was/ quite surprising -- still is! But considering the hospitality I've been shown, to say nothing of the fine company I'm enjoying, I can't hardly say I'm inconvenienced."
>Your praise sets the princesses aglow
>"I'm very happy to hear that! I'd also be very happy to hear about your world, if you would so indulge us."
>"Why don't we let let our guest get settled in, first, dear?"
"Oh, no, that's quite alright! Turns out I don't have much to unpack."
>You shake your nearly-empty backpack for emphasis
"Would you both be amenable to walking while we talk? I'd like to see more of this beautiful castle, if I could."
>"That sounds great!"
>The younger princess eagerly looks to her aunt
>"I'm afraid I won't be able to join you, but do please go ahead without me."
>"Are you sure, auntie?"
>Celestia nods to her niece, and winks playfully at you
>"Just save a few stories for the rest of us at dinner, Anon."
"Right."
>With another warm smile -- or is that enigmatic? -- Celestia leaves again
>You open your mouth to speak to Cadence but her mouth is already open...
>...And she's not speaking...
>...She's staring
>Following her gaze, you trace it to the box of candy hearts you left on the nightstand
>Looking back to her with a raised eyebrow, your eyes pass the mark on her flank: a blue gem in the shape of a heart
>...Makes sense, sorta
>Heh
"See something you like?"
>She shakes her head lightly, snapping out of her reverie
>"I'm sorry, I don't know what came over me!"
>She takes a tentative step forward, and you turn back slightly to invite her closer to the nightstand
>Approaching with reverence, her eyes widen with delight as she takes a closer look at your candy
>"This is... something from your world?"
"Mmhmm. Candy."
>"How... sweet!"
>You chuckle
>"May I...?
>You're perplexed for a moment before you remember that according to what you were told, you can both eat pretty much the same things
>Of course she'd like candy
"Help yourself."
>A light blue glow envelops the box, and the enamored princess slowly levitates and rotates it in her magical grasp
>You chuckle again when she jumps at the rattle the candy makes as it shifts inside
>After an awkwardly long inspection, she begins to levitate it gently back to the nightstand
"Oh, you can have them"
>You're met with a stunned look
"Er, if you want them...?"
>"But... a relic from your world..."
"Haha, true, but I saw how you were looking at 'em."
>"No, I'm sorry. I--I couldn't."
>Your smile widens as you take the box and present it to her
"Please, they're yours. Take them."
>Her lip trembles, and you think you see tears well up in her eyes
>"Th...Thank you. Thank you so much!"
>Again, she takes the box in her magic
>Looking you deeply in the eyes, she nuzzles her cheek into your abdomen before looking again into your eyes and whispering
>"Thank you."
>And then she turns and flees the room
>...
>So much for that tour