How long can you play for?
From five minutes to an hour and a half (including a ten-minute break).
How long do you need to set up?
It depends on what sound equipment is available. If all is provided, which is most helpful, I only need time to plug in my guitar and do a sound check. I do have a small amplifier and microphone if sound equipment is not provided, which will not take but perhaps five minutes longer to set up.
Can you play our favorite song?
If I wrote it, probably yes. :) If not, probably no.