Yep, we had a bunch of these we rented out at our paintball field when I worked for a small company in high school. It was a blast. Working the "concession" stand (selling paint, renting equipment) wasn't that much fun, but I got to referee an equal if not greater amount of time (our field had a central area with an abandoned building and we can climb on the walls to watch multiple groups).

Also I could play free whenever I liked (off hours).