I work at a movie theatre and we were allowed to dress up for the movie Prom Night. I brought my boyfriend to see the movie in the biggest theatre on the busiest night. I asked one of the managers to make a little 'announcement' before the movie started, having her ask my boyfriend to stand up in front of everyone and asked him to prom for me while everyone was watching! It's a cute/embarrassing idea and you don't have to work there to get them to do it!
