Great people to work with. Flexible hours that fit well with a school schedule. Good pay for a part time job. You get to travel around cool places and meet new people. Chance to use and tinker with advanced technology such as projectors, sound systems and screens that are over 50 feet tall!
Cons
Lots of driving, can be wearing on your vehicle. And you basically won't be able to work much if you don't have a car or driver's license.