My complaint:
I was there with my young child who has celiac, and gluten is dangerous for him. All throughout Disneyland Paris , it was almost impossible to find him something to eat!! Almost no sweets, lollipop, snacks, or any kind of food, everything contained or had gluten traces. He was so disappointed and so was I. Its so easy to make sure there is one snack gluten free (like potato chips or doritos, and chocolate/candy)
Suggested solution:
Easy, as I wrote, make sure there's at least one kind of snack and sweet that is gluten free.