Hi Victoria!
I'm sure you must be so excited knowing you will be at
Walt Disney World Resort tomorrow!!!
I do not know of any tailors at Walt Disney World Resort. I did a quick search online and found several nearby, if you will have a car or would like to use a car service.
If you really get into a bind, you can also use iron-on fusing web hemming tape. (Sadly, I can't sew a button on and I have used this fusing tape on Halloween costumes or other items needed for my kiddos for various school projects. I have also used it on some of my pants.) You can pick some up today from a general merchandise store in your hometown, and use the iron and ironing board that is a standard amenity in your
Resort hotel room, once you arrive. Is it the best option? Probably not. However, it has worked for me on numerous occasions and it's really easy to use. At the very least, it's an option. You might also ask your Resort hotel Concierge if they have any ideas when you check-in to your hotel.
Thanks so much for sharing your question with the Disney Parks Moms Panel. I wish you a magical vacation filled with fun and pixie-dust!
Kari