Based off of what I have seen, I have to contradict what you guys said about eating at counter service restaurants with food allergies. On my last trip, my family and I were getting lunch at Cosmic Rays, and a man in the line next to us ordered a burger with no buns. The cashier immediately asked if this was just from preference, or if it was because of a food allergy. Because it was the latter, the manager came out, talked to the man, and had a burger specially prepared with clean utensils. Having experience with food allergies, I saw this as incredibly well handled.