My daughter has severe life threatening allergies (all nuts & dairy). I strongly encourage you to make sure the allergy is noted in each & every one of your reservations. “For us” table service meals were easier to deal with regarding the allergies. When your server arrives at your table he/she should say “I see someone at the table has an allergy”. If they don’t, make sure you do. They should ask if you’d like to speak with the chef. You definitely want to do this. But please note, the length of your dining experience will be longer than normal. Which, is completely acceptable given the attention they’re giving you. At the buffet’s (like Chef Mickey’s) the chef will usually ask if you and your 6yr old would like to walk around the buffet so they can point out what’s OK to eat. We’ve even had a few times where (without asking) the chef offered to prepare something not on the menu for her to eat if she didn’t see something that looked appetizing. Disney is very, very good about allergies. However I do have to make you aware of one thing. Disney basically has two types of restaurants on property, owned & operated and operating participants. The Disney owned & operated restaurants are definitely a notch above when it comes to dealing with allergies. The operating participants say they uphold the “Disney Standards” but are quick to add that they also abide by their own dietary standards.
Unfortunately we learned this hard way. We had reservations at La Hacienda and the chef came out spoke with us, assured us he would personally prepare my daughters dinner. Which he did. Meal was awesome! Then came dessert. We said my daughter couldn’t eat the ice cream but could have the sorbet. A dessert waiter, not the chef, brought out the bowl of sorbet with a churro stuck in it. We said she couldn’t have the churro and explained the allergy and about cross contamination. The waiter looked like he didn’t completely comprehend what we were saying, but went away and came back with another bowl. Or so we thought. All he did was remove the churro and bring the same bowl back out. She had an anaphylactic reaction while we waited for the monorail. Epi injected on the platform and waited for the EMT’s. Ambulances are stationed at several locations around property. Ours got to us in less than 5 min after the cast member called them. Spent the night in Orlando General. This happened back in 2011 when my daughter was 7. She received a FP+ trip to the ER. To this day her Stitch still has the ER bracelet the EMT put on it to help relax her. I mention this because at the time we didn’t know there was a difference in restaurants. We blindly assumed we could put our complete trust in the process. You can’t. And you shouldn’t. Especially when it comes to allergies. We learned from that experience and have returned 5 times since.
My advice is much like everyone else's, use good common sense that you're already applying at home. Update each of your reservations to include the allergy note (A MUST), always carry Benadryl & 2 Epis and contact WDW Special Diets if you have any specific questions or concerns regarding WDW dinning with allergies. They can also tell you which restaurants on property are operating participants, if you want to know. It’s OK to eat at an operating participants restaurant, just be vigilant. Regardless of where you eat, ALWAYS speak with the chef. Quick service meals are a little tougher. Generally a manager or a shift supervisor will come to you first. Explain the situation and ask to speak with the chef. Table service is easy, quick service meals are a bit more of a challenge and definitely take longer. Just be patient and vigilant and you’ll be fine.