For me it really takes alot ot get me into the theatre (JP, SW, LOTR, Slasher Films) but when I do go to a theatre, I buy a drink, and nachos.
When I go to the drive-in theatre, we always sneak in food...its a hella lot easyer and cheaper than paying $2.50 for a pizza roll smaller than your standard egg roll...good god...how can they charge that.
If your going to a theatre with free refils on stuff, keep the containers, like the bag for next time. I figure for the 11.00 they charge they can afford to give me my free refils. Whenever I want.