I realize I'm risking side-tracking the original thread, but I have to challenge this notion that middle schoolers can't sit through an hour long show. A typical cinematic feature these days is anywhere from 1.5 to 2 hrs in length, and the kids seem to sit through those without issue. We just finished a 6 performance run of Seussical (Theatre Young Audiences) here, and had no issue with kids in the audience (or in the cast) remaining focussed for the 72 minute production. Now is you are talking about the "toddler" crowd (say three and under), then I would agree that they will be challenged to sit for the entire show. Best to provide them with a wide/empty lobby, and TV monitor. That way they can stretch and run, while their parents can still keep tabs on the show. Trying to squeeze extra revenue out of the concession is a different matter.