The first thing I would do is make my way to Canterlot, run past all the guards and see Celestia and Luna. To see these two gorgeous princesses in person would be the greatest thing in the world, and i'd tell them how much i admire and respect the two of them for everything they do for their kingdom and for everypony is simply amazing. Then, if they allowed me, I'd give both of them the biggest hugs in the world and tell them how beautiful and amazing they are. I'd be in luck though, because both of them allow me those hugs and happily hugged me back and thank me for the support and admiration i just gave.
After that, and after another 10 minutes of hugging the princesses, I'd make my way to the Everfree Forest and lure in Queen Chrysalis with a heart shaped box of chocolates. She'd ask why I am here and why I'm not afraid of her and I'd tell her: It's because I love her and I don't think she's evil... and that she was beautiful. And like with the princesses, I'd ask if I could hug her, and with my endless luck again, she allowed me to hug her and actually hugged me back and whispered "Thank you", only to quickly leave after that.
I'd then go back into Ponyville and talk with Rainbow Dash and tell her how awesome she is and how I think she's the (second) fastest thing I've ever seen. She'd give me a hoof bump and actually showed off how fast she was by doing a Sonic Rainboom and I was completely stunned and amazed by the spectacle. Then maybe talk with Twilight and Fluttershy and ask if they could show me around Ponyville and make sure I wave hello to everypony we pass by. All we would do is talk and have fun together with all my new pony friends
A whole day in Equestria would be amazing!