Sure, unless of course the waitress is one of the millions who have worked their way through school doing so...or a mother whose husband took off...or married mother of six trying to make ends meet...or a hard working person of limited intelligence...or a laid-off corporate employee who would rather work serving pompous, cheap ingrates than take welfare.
People of limited inteligence can’t do the job of waiter or waitress. It takes some smarts to do the job at all.