Vegas was a joke, taking it from a post a few years ago started by Harvey Cohen when people were complaining about the MOA rally in Charleston.
RE: the RA rally ... I heard several things, but the rumor I think might be closest to the mark is the Ozarks.
The RA is much more laid back than the MOA. I suspect they'll let us know as soon as they know. And by the way - yes, I have been a member of both clubs since I started riding.