I've taken in pizza, donuts, KFC, and a huuuge bag of burritos.
Yes, you can bring your own snacks and I always take a bottle of water with me. I often see families taking in large bags of cheetos and popcorn.
Unopened water only and unopened bags of peanuts, snacks etc..they have bag size limits not sure of the top of my head but it's on their websites. Dont think backpacks are aloud
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