New York Girl: Yes the "O" stands for open. If you want to maintain a low profile at your first open AA meeting, show up about 5 minutes to the posted start time. There will be a "greeter" at the door usually. They will say my name is such & such, as they reach out and shake your hand. Say hi, I'm "whatever", and make a beeline to an empty chair. Grab a coffee on your way if you like. You can bail right after the meeting closes if you aren't comfortable talking to anyone.