The store should be open at noon for sure. Maybe earlier, but I dunno. I've never been there earlier then noon.
Being an "official" tournament doesn't mean much. Last month, GGAC didn't happen. I'm not sure if MBAA happened either. And MvC2 and 3s are pretty much 100% player operated. Since your the guy making BB happen, it'll be on you. If you need help or advice, I'll offer myself for help.
Not all the tournaments are run simultaneously, but there will be multiple tournaments at once. I don't think you guys will have to worry too much about players being in multiple tournaments. But if you do, you generally scream their name out and if you don't see them or hear anything about them it's a lost, or you just move on to a different match, depending on how anal you wanna be. Hopefully no one has to take a lost because they ate a bad burrito and had to take a shit. Players please make sure you communicate with the bracket guy about where you will be or what matches you have up next. bracket guy please do your best to keep track of your players and inform them of any upcoming matches.
Oh, and Alex, thanks for taking care of Matt that one night.