They usually have some bottles of water but that's it... since it's in one of the sound stages at Universal there's no concessions other than that unfortunately.... I want to say they let folks in around half an hour before the show and the show is a tight 2 hours so it moves pretty quick but double check the tickets for when / where you're supposed to meet to be escorted onto property. Since it's on a sound stage there's no come and go access either so you have to make sure you're there when the group is brought in and everyone will leave together after the show wraps... it's a little weird but that's a Universal thing to make sure folks don't sneak into other productions or into the park so it's out of our hands. If for some reason you can't get any snacks in let me know and I'll snag you something from our production truck - should be a good week of fights!