Admittedly I love it when kids come to play. I don't care that they slap the buttons too hard, get fingerprints on the glass, or leave the 4 player games going. They're getting exposed to something they've never seen before, and as long as they have a good time i'm fine with it. By the time they leave, even without help most of the kids that come out to play generally stop slapping the buttons by the time they leave once they realize how to play a pinball machine. I'm just happy they get to experience pinball, it's rare around here that they'd see one otherwise. I can fix anything they can possibly break.