We did this last year. The snacks are very 'vending machine' types of snacks - bags of chips, rice krispie treats, cookies - that type of thing. We had access to water and Coke products. We didn't bring anything of our own, but were told we could. One of the boats on our night was celebrating a birthday with a small party - they had a banner and a cake and what appeared to be BYOB adult beverages (although I do not know for certain they were actually adult beverages!). I will tell you we've done this a couple times, and it is really a fun evening - about 90 minutes to 2 hours from start to finish, and Luminous, of course, with an unobstructed view!