I think the best thing I’ve read in here is do your part. I’m thinking of having jerk signs up like at sporting events so that if you don’t want to confront the person you don’t have to. Also a sign at the entrance with the rules of the show and legal mumbo jumbo. Then signs on every game that go a bit like this:
1. Only play multiplayer games if you have multiple players.
2. Always look behind you after a game to make sure no one is waiting. Then play again.
3. Respect the games and other pinheads. No food or drinks on the games or other pinheads
If nothing else it’s CYA if you have to kick someone out.