Way too many people in each class. Go if you like being cramped without any individual instruction, so you never quite know if you are doing any position correctly.
Be prepared to have your wallet ready as they have these weekend classes if they can suck you into it ($450--hello, sucker!). They do everything they can think of to get their hands in your wallet and suck you dry I noticed...not appealing at all unless you don't mind getting taken.
I do know they try and put the pressure on you when you sign up to spend and get the "best" offer they have, which will cost you a good $2K--and it is probably higher now than that. I had a friend do it, but I sure would never do that myself as it is not worth the money.
You can find better if you look around. I'd suggest that myself.