by secluded... do you mean away from the scene/where they have to drive a long way to get home therefore most of them wouldn't be drinking anyway?
get a few of your hot rocker chick friends to spread the word. People show up if they know girls are showing up.
Don't rely on your friends. Treat them like anyone else. If your friends see you brought a party to your show... your friends'll join. That's how it works on the other side of Canada anyway
If you get a huge turnout... keep a device that records video with you. That way, when people're rockin' out... you can get it on film, post it up and show everyone what they're missing