PLEASE feel free to PM me!
First few times we went to WDW, my DS was allergic to dairy (had 2 anaphylactic reactions, one when he was 8 months), eggs, sesame, and peanut. I didn't even know the first time how great they (disney) were!
Note how many times I've returned. They are that great. I keep still getting asked by others why I like going to Disney. No one can understand how wonderful it is to feel safe for your child there, he can eat such great food, and we have never encountered anything coming close to this.
DS has outgrown peanut and sesame (not in that order, and it is rare, only about 5% of kids do this).
Also, I highly recommend the book his allergist wrote, "Food Allergies for Dummies" by Dr. Robert Wood. It is so great! I wish I'd had it years ago!
Trust me, you will be safe!