Two thoughts:
(1) Not likely you will learn how to bartend by barbacking unless you have a
good bartender and manager.
(2) Can you lift a keg? As a female bartender who can tell the dirtiest
jokes, carry cases of beer and liquor up the steps without flinching, I'll
tell ya there are two things that will always remind me and everyone else that
I'm a girl: I can't lift a keg from the ground to a shelf, and sometimes I get
a little freaked being alone behind bar at night.