I'm playing my first chip show on the 21st - thanks for all the advice I've vicariously obtained through Nick, everyone! I'm pretty lucky in that I'm opening for another musician (Dj CUTMAN - http://www.djcutman.com) who knows his way around live shows and will have a million cables for backup. He's also probably going to mess with a Kaoss Pad for at least one of my songs, so I get even more hand-holding goodness. Like Nick, I've played live shows before (but far, far fewer) with guitar-bass-drum-type bands but haven't done so in a long, long time. I'll be pretty damned nervous.
I only have two carts and need both for performing (although one is just for running the keyboard, so if shit hits the fan I can just steal that cart and do without the keyboard). I plan on going with fresh batteries and hoping to hell the carts don't die during performance. A couple beers and a couple weeks of rehearsing should do the trick.