Raise money for a Stanley Cup Finals party

It's become a bit of a tradition to see your team in the Finals. This year, it's gone to seven games. So you're going to rent out a screen at the local theater and invite a ton of people to come watch. You've got your costs for the rental and the catering estimated and you need some help. You find that there's a lot of enthusiasm for the idea of watching the game in a theater, so collecting the money should be no problem. Aside from having to handle all that cash and make a lot of bank deposits. You need a way to get a head count for the party and collect enough to cover its costs without all the paper. And you need to do it fast. The game's tomorrow.