In Tulsa they just built a huge one I think is cherokee casino, they have alot of black jack and poker tables, and they do rake a take on each hand, but thats pretty standard, I mean how else are they gonna make money? And I go occasionally, but my brother and his friend go alot and my brother usually buys in for about $150 and most nights comes out ahead anywhere from $200-$300 bucks, his friend is a little more serious and buys in for $300-$400 dollars a time and usually comes out ahead, as much as $1000 dollars some nights, he has actually made it quite profitable and his only means of work through school right now.
Granted, I'm not saying it's easy to win money, they are pretty good players and have it down to an art for the most part. But basically I'm saying don't listen to the others, if you can't play the 21 and up casinos and just want a fun weekend trip or whatever, go for it, it doesn't have the glitz and glam of vegas or other places, but it does the job well of just plopping down some cash and seeing how it goes.