I've read that they do all have one, but I've never asked to see it. I use the information that Special Diets sends ahead of time when I contact them about our allergies and I come up with a detailed list of what safe foods I can get at what locations by parks. When I walk into a location, I know ahead of time what our options are based on this list. I can't imagine how overwhelmed I'd feel if I had to look through a detailed binder to find something safe for my kids to eat each and every time they got hungry, and then what happens if we've waited in line only to find out that there isn't anything there for them? It's just not how I want to spend my vacation. I carry my chart of safe foods with us to the park every day and it makes our lives so much easier.