Eddie, my past experience at a number of OXs, if you want to participate in any of the driving classes, you need to sign up in a matter of minutes. I've seen several driving classes close out within mere minutes of the email blast for classes being sent.
I'm into complex recovery techniques, multiple points and angles. And every recovery/winching class closed out before I could sign up. But, that didn't prohibit me from standing around and watching. Always good to hear exceptionally qualified instructors teach...makes for a great refresher even if I wasn't hands on.