just got back from being away for a week, so sorry for the delay in responding
OK...first things first...
the 21 and over thing was totally Justin's deal. he is definitely trying to establish the aforementioned "cred", and wanted it to be grown-ups only, presumably to be more performance-oriented and less screamy. also, because it's such a late show, the thought was that it might be irresponsible to allow such a young crowd to be defying mommy & daddy and coming down to the bowels of the U Street corridor after Metro. or maybe they were trying to protect mommy & daddy. in any event, we didn't feel it was worth fighting over. had it been a regular showtime, we definitely would have.
now, about this "cred" thing. there's this judge somehwere down South thinking that the Ten Commandments is the ultimate "cred" and that everybody should fall in line with that way of thinking. the Nazis had a similar approach (as do most Republicans, IMHO). who is to say what is hip and what is not? try and tell the people that fill up the club for Justin that they should NOT be enjoying this.
there is a big difference between promoting a murderer and/or bigot (we once refused Professor Griff a gig until he apologized for his remarks, which he didn't), and a boy-band refugee. personally, I think that people that take all of this that seriously should get over themselves, and try and learn how to be happier. I'll say it agian...stop thinking about what you're thinking about and just enjoy life.