Disney is generally very helpful when it comes to food allergies and dietary restrictions. If you ever have a question, ask a cast member for help. A lot of times there are gluten free alternatives that are not listed on the main menu, so be sure to ask.
Here are some of my favorite Disney World gluten free food info websites:
This one is part of the official Disney World site-
Special Dietary Requests at Disney World
I hope this helps and enjoy your trip to one of my favorite places on Earth 🙂