Popcorn, we usually go to the drive in movie so we bring our own snacks & drinks from home. They do have food not just snacks so we will get burgers or chicken tender baskets & have a "dinner" with the movie, but we always get popcorn because there is just something about the theater popcorn that makes it special.
At our swim meets - fruit bowl or veggie tray :) I was dubbed "Concessions Queen" this year for the team. I get to make sure all the yummy fruits and veggies get to the meets and dish it all out (I have to make sure those who volunteered to bring it actually do and then check 'em off the list). I typicaly end up buying myself one in the end lol.