Sound isn't a problem on the camera, it's just that if I can get a separate recording, I don't have to worry about anybody hitting the microphone or the stereo balance when I swing around to get a bit of footage of all your adoring groupies.
I might just try getting the footage on tape rather than risking beer on the laptops - if I clean the camera heads I think I'll be OK. I'll get what I can. How long is your set? 45min? Just so I can budget for tapes.