I know you were looking for Tom, but I believe I can answer (I've played bingo several times there).
There is a sign between the big room and the non-smoking room which says something to the effect of "Per order of the fire department, the maximum occupants is not to exceed x,xxx persons" although I don't remember what that number is - I think it's 3,000 or 3,200.
Their website states that they can hold 3,600 people. This is likely the total of the three rooms. It's probably something like 3,000 or 3,200 in the big room, 100 or so in the smoking Video Bingo room, and the rest in the non-smoking room.