It really depends on the individual contracts. Each publisher has different terms and conditions -- PBS was different than Paramount or DIsney say. Having an Educational/library PPR (at least when I was doing this) did not allow you to charge admission. THere are ways to get around this. Really expensive popcorn was one way.
here's one explanation of it.
http://www.criterionpic.com/cpl/lcl_frequentlyaskedques.html