Gonna keep throwing my idea. Bowling Haha. There are lanes in crofton, annapolis, serverna park. An then many more I am not familar with. With an group of twenty we could put five people six maybe to a lane. That would be about four lanes. They have group rates like parties at annapolis. There expensive but with such a big amount it could split out nicely. Or everyone pay per game. Which on a saturday would be about 4 dollars a game. With joking and talking I dont see games flying by and it being a great time with cheap price. Fun for the kids and adults alike haha.