The only way I could think to get people to let games sit would be making it a nice financial incentive. Perhaps for those who have games still left on Sunday get a drawing to win a Expo used stern game. What do they do with all those used X-men after all?

No sale required - if you have a game on Sunday you get a chance if you don't then you don't. However, Stern just started loaning out games to the expo - So i don't see them doing this. Its a wild idea just might help.

I think its hard to regulated what people bring for free. Yes they get a discount to do so but not enough to force them into a agreement that does not work for them. People are taking games out for a number of reasons. A they have to leave early or b they don't want them to be at a show after they paid Expo pricing for them. If you clamp down on them it would fail in my opinion.

They had 8 X-men to my knowledge. Three on the front of Marco's / Three on the Back, one hooked up to mega speakers and one in the tournament. Not 20, but the lines were never that bad. I never waited more then one deep. Loved the game by the way!