You are allowed to bring your food into the parks, with a few exceptions. Coolers or backpacks larger than 24” by 15” wide and 18” high are not allowed. Alcoholic beverages or any glass containers are also not allowed. Most snacks or foods that do not require heating are permissable. So feel free to pack some snacks and foods that do not require heating, and you will save a little on your daily budget. Several of the quick service restaurants have outdoor seating where you can sit and enjoy your snacks from home.