It seems like banquet servers do a lot! Not only do they set up the room, they serve all the food, and the clean everything up. No wonder a banquet server salary is larger than a regular server's hourly wage.
I suppose it might even out in the end though. Near me, most banquet servers make something like $14 an hour, but a regular server can make a few hundred dollars in cash on a good night. I'm not sure if it's worth the trade off to have guaranteed money, or if it's better to take your chances and work as a restaurant server!