Yeah, it went very well. House soundman didn't show up, so I just unplugged the feed to the mains and plugged in the cables from my mixer. One of the mains had its powr cord plugged into a breaker box inside the cabinet that holds the crossovers for the subs and the amps for the house monitors, but I was able to get into it and just plug it into the wall. Didnt' need the subs anyway, good house speakers.
11 players showed up, less than I expected, as there were a bunch of late cancellations, but many brought friends/damily, so the bar did well. Everyone who wanted to had a send chance to do 2 more songs (3 the first time), I started out with 5 and ended with 5 quick ones. No real 'clunker' players, just a couple of beginners who at least had decent voices.
Doing it all again in 2 weeks, and if it plays out, will become a twice-a-month regular thing.