So there are 2 ways it may go. In previous years you took the same candy and then took the candy to guest relations and traded it in for a non food item or for allergy friend candies. Last year they made the system better. At each candy stop those with allergies could get a teal token instead of candy. You then took the token to the allergy exchange location and for each token you could either get a allergy safe food item or a non-food item of your choice.