Some girls work hard for tips with a table full of guys. And by working hard I mean undoing more buttons on their shirt.
I look forward to seeing my girlfriend after work. If I worked with her all the time I wouldn't have that. It also wouldn't give you much to talk about. "How was your day?" becomes obsolete.
Serving is a good job, though. I'd like to get into it. It's especially good while going to school full time, and your tips usually match your hourly wage, or better. I love my job, but I'm not a huge fan of my paychecks.
Hope you have fun there, anyways.