It more than that as has been already posted and is announced every night after the band breaks.

It is the original posters time and effort and not up to you to post judgement. There wasn't any whining - just an interest in knowing the details.

After reading some of the follow-up posts I went back and re-read the OP. I could not see anything in his post other than curiosity, and I have wondered the same thing, for no other reason than curiosity. I don't get why some posters get so wrought up over a simple question. IMO you answer it or you move on. By the way, I am sure some of you will point out that I did neither, but I just don't get some of the animosity for the question or the questioner.

Here's a plan:
 

If I were in charge of the entertainment department, I would check the total sales of adult beverages and base their pay on that. High sales - higher pay. Low sales - lower pay.

I was at Spanish Springs Town Square a few times when entertainers were encouraging people to buy drinks. So it leads me to believe that beverage sales may be used as a gauge.

Note: I don't mind "wasting time and effort" on this thread because I'm retired. ;)....:ho:

If I were in charge of the entertainment department,
I would set up a hall like Preservation Hall in New Orleans in Brownwood. I would put it in the white building that looks like a church. The music could be any genre. In Preservation Hall there are about 5 rows of benches and standing up room behind them. They don't serve drinks but you can carry them in. A ticket gets you admission and you can stay as long as you want but it's not so comfortable that you would stay for all 3 sets.
This will give you a feeling for the place. click here