DH was diagnosed with celiac disease 10 years ago, and we've eaten dozens of meals at WDW since then with absolutely no negative reactions. In the last year or two, most restaurants have added an allergy menu, but you always have the option of speaking with a chef at table service or manager at quick service venues. Often the chef will offer to modify a dish even if it's not on the allergy menu (for example, leaving off a sauce that contains gluten or substituting a potato dish for a pasta side). Generally about half to 3/4 of the regular menu items are either already gluten-free or can be modified. Dessert choices are often limited, but if you ask they may be able to cobble together something from ingredients they have on hand (for example, DH loves berries, and many table-service places will put a scoop of them over a dish of ice cream; they've also offered to use a gluten-free brownie as a base for a brownie sundae). At snack carts and walk-up windows they usually have a binder with ingredient lists so you can look for and avoid unacceptable items. Items you may want to consider (make sure to consult cast members or ingredient lists before consuming to make sure they're still gluten-free!) - Mickey ice cream bars, soft-serve ice cream, popcorn, flourless chocolate cake, crème brulee, gluten-free dinner rolls, waffles, cornbread, pizza, hot dog and burger buns, chicken nuggets. Good luck!