Playing a movie that isn't scheduled violates the contracts we have with the distributors/studios. This could subject CO to penalties. Although some FA's will do it anyway (thus setting up expectations contrary to policy), it's not fair to expect them to. If you have a problem with it, write CO but don't expect an employee to break policy.
Sorry, playing a second movie, or one not scheduled, is not that important to me compared to getting a mark on my record with the company.