You'd think so wouldn't you? I thought it would eclipse the 4,000 mark, but when i searched Google for the capacity it came up with a report from one of the Birmingham newspapers about the opening of Gatecrasher, saying it had a capacity of 2,400. Very surprising given the length of the queue you get there.
Either way, the place is absolutely **** huge, I really couldn't understand my mate's logic, you could easily get lost or lose someone else in that place.
I fthat is the capacity, then I would imagine it's for safety reasons rather than purely how many you can cram in there.