Well, you suppose there is one solution to this….
You return upstairs where everything is just as you left it, though now with the added luxury of a marching band and a crowd cheering through the walls outside. Spike remains dead to the world. Still, it shouldn't be too much a problem for you and get to reading the letters right away.
You speed though a few letters and see that they are all pretty similar; random citizens of Equestria greeting their new princess, wishing you luck ans sending their love. Many seem to be written by young foals in crayon. Other's ask you personal questions, like what its like to suddenly have wings. It's quite a lot to go through and rather….tedious.
To help pass the time and quit your stomach you start to nibble on some of the letters you've read. It's not great, but it a tleast makes you almost kinda think you're eating. Your stomach reluctantly simmers down a bit, but you can't help but wish you had one of Applejack's homemade fritters or one of Pinkie's sweet confections instead.
After about the third dozen letters, one catches your eye; a very large, very ornate blue one with a large seal showing an all too familiar cutie mark.
"Oh no…" You say to yourself and carefully open the letter.
It snaps open on its own about halfway through, exploding an show of sparklers and whizzing fireworks, threatening to burn your house down!