Our town uses one twice a year and its fun. We were thinking of doing that last year, but we already had too much on our plate. They may do it this year. Call local places that rent inflatables and ask. If you supply volunteers, it is cheaper.
We were going with the old "drive in theatre" theme and have each family in a parking space with their beach chairs.

We got a screen, equipment, set-up, and operation (ie the company did everything) for about $1800.

If you were supplying the labor, probably half that, I'd guess.

Hi, we are a school of about 500 students we do not have a gym just an all purpose room. We do not have a space that will house the entire student body unfortunately. While looking for some ideas I came across an inflatable movie screen. I was just wondering if anyone had used this and what the cost would be. Thanks for any imput you may have.