That is an excellant idea!
Why could it not be done? Other than the cinema industry trying to run you out of business but it is a known fact that moviehouses make almost no profit on just the admission ticket. The profits come from refreshments that are horribly priced. When I do go with my young son we make a game out of how much stuff we can smuggle into the moviehouse and defy all the signs telling us not to.
Its like the old drivein movies, my whole family went it was a social event we looked foward to as children and we saw short funnies before a movie and not ads for an hour.
What the cinema industry needs to do is review the whole prcess, first off use short range cellphone blockers the house can furnish a vibrating pager if that person must stay in contact with the outside, secondly bring back the experiance of something unique like better seats, even having reserved seating would be a good idea like a skybox rental. For a fee you can have a section that is just for you. Sure its a story of the haves and have nots but todays society is fast becoming a lot of "haves".
Many multiplexes could have an exclusive theatre showing the same movie, no ads, no previews, better seats and strict enforcement of conduct concerning outside communication devices.
Sorry about the rant but I live in Alaska and out local small moviehouse is such an outdated joke, popcorn always makes me sick, drinks are watered down, screen is just short of a painted wall and the seats I think came from scrapped DC3's. Goodby moviehouses from me, I'll wait and watch on my widesscreen DLP soundsurround in my shorts in my recliner with the pause button handy, and closed captioning cause I'm hearing impaired.