WDW is WONDERFUL when it comes to allergies/diets etc. My grown DD has peanut, corn, soy allergies and they were great. At the buffets, the waitstaff will call the chef out and the chef will walk you down the whole buffet and tell you what you can/can't have AND at the TS restaurants, the chef will come out and guide you through the menu. At one buffet, my DD came back and said, she felt so badly because there were only a couple of things (outside of desserts) that she couldn't have and the chef took the time to go over each dish with her. When you call for dining reservations, just let them know to note the allergies on the computer. Many people call ahead to be sure the allergies are in the system or 24 hours ahead, call each restaurant where the reservations are held to be sure it's noted.... We never did either and they always knew about the food problems.