I'm a bit old for gawping at gogo boys and an aversion to loud music keeps me on the fringes of the action, so I don't know if this has been attempted already..
But grumbles by customers looking to get their rocks off seem a bit repetitive:
'He was a bottom and I wanted a top'
'He was a top and I wanted a bottom'
'I bought him two drinks then found another customer had already paid the bar for him'
'He was shagged out and couldn't come'
- So why not have a system of wristbands?
Maybe:
Pink - I'm a bottom
Blue - I'm a top
Green - I'm versatile
Red - I'm spoken for (or staff)
White - I'm ready to shoot my load with someone
- Anything like this been tried before?