Business bonus points

Last night I was at the Varsity Theater over in Dinkytown. Behind the bar were two signs:

Bottled water: $1.50

Ear plugs: $1


Just as I'm in the midst of a series of papers on occupational hearing loss for PubH 6020 ... perhaps I'll mention it in my next paper. At least if I decide to go back there for a concert, I won't need to worry about having my own ear plugs. I'm curious to know whether or not the employees there have to wear them during shows?