I got my Death Grips ticket for December 1st. I went with the 21+ option. I haven't been to this venue enough to know how they seperate the crowd, but I do know the bar is in the back of the venue. Hopefully it isn't like the shitthorne theatre, where the back half is 21+.
There is a 99 ticket purchase limit, and it is strictly enforced.
PS: Pinback tickets are on sale, Wonder Ballroom, 1/24/13.