Attention American Theatre Owners: In China, they've begun to sell a little card for like $12 that you can use to get in to up to 30 movies during off-hours.

I realize that with the way film distribution works in the US, this is a little less feasible, but you really should start entering into negotiations with studios to begin to offer something like this during the summer. You'd have your theatres bombarded by families with kids who'd probably buy lots of your over-priced concessions, since in their minds the movies were "free."