Semi-related story.
20-some years ago I was in college playing in the jazz program at Texas. As a matter of course, many of us would get called now and then to play in a combo at some University black tie function. These gigs seldom paid, but those of us on scholarships seemed to be the ones who got called, so it made some sense to me.
Here I was one night playing at a dinner party with the UT brass in attendance and a few people whose names you might recognize. It was cool.
Then we finished a set. I laid down my bass, walked five feet in the direction of the coffee stand, and this guy who had definitely been watching the group play comes up to me and tells me to bring his table three cups of coffee.
Two things have made this event stick in my mind. First, I knew that the guy understood I was the bass player. Second, it wasn't clear to me that he was trying to be a jerk. Rather, I think the notion came naturally to him that the musicians and the waitstaff were more or less the same.
This was one of the reasons I was never able to fully commit myself to a music career. I guess I'm a little too conscious of my own image to be that person every day. I say that not the least bit pejoratively towards anyone who made another choice - nor towards the waitstaff for that matter, who God knows made more than I did that night.
I still gig, but I can't stand being treated like the help.