It was the same at the event that we went to. I talked to Dave (one of the owners of Founders) after the event and KBS was gone in 12 minutes. Needless to say there was quite a few disappointed people.
It was estimated that there was around 6000 people that attended. 5500 tickets sold and roughly 500 tickets that were given away. It was a great time standing in the falling snow and enjoying great Michigan beers!