Well, AA is like, an organization, and there are a couple of groups...but those comprise the minority of AA's membership. There's like SWAIRTAC and Brotherhood of Stuff and Fatal Exception, but that's like 10% of AA.
As long as you're honorable and like to have fun, then chances are you'll get along well, regardless of gear. You might be a little out of place though. Most of the players that you'll end up playing with at open games (non-AA sanctioned games) are pretty hardcore, and they're really into milsim. Modern milsim.
Well, given the, temperate, to say the least, climate of Arizona, where we play rotates throughout the months. When it's not so hot, usually the Four Peaks Recreational Area or Bushnell Tanks. As it gets closer and closer to summer, the staging times get earlier and earlier until everything gets moved up north.
All the playing gets done on Saturdays. There's usually an open game every weekend, where, like I said, you'll see the hardcore airsofters.
That being said, I'm still a new guy myself, but, I think I answered your questions pretty passably.
