I played in one recently at the Paris (and won it!) but they're usually pretty small. The one I played in had about 45 people, but it was a 3:30 PM start... probably the later ones are bigger. They have them every 2 hours, I believe, 24 hours a day on the odd-hour half hours. Their poker room is no longer in a sectioned-off area of the casino - it's now in the sports book area.

I've also played at one at Caesars and, although I didn't do well, it was well-run and very comfortable. The consolation prize was that while I was waiting for Barry W to finish, I sat down with the fish at a 6-12 table and won back my tournament buy-in and a lot more. Now THAT'S a game worth playing in.