My uncle was telling me that he knows people who go to Biloxi to just pay the slot machines. Every hour or so some waitress goes around stamping frequent visitor cards. Apparently, according to uncle, some of his friends feel like the invitations for free hotel rooms in off-season and other freebies, the casino they like is actually paying them more in services than the other way around.
Don't know if you can play it like that in Atlantic City.
Also, for a cheapo, I've been told Blackjack is the game that's got the closest to even odds. If you download some software and get good at Blackjack, you can just sit at the table and go up for awhile and down for awhile. I did that four trips in a row several years ago. You just have to remember to walk away when you're up. When I did it, my threshold was $100, usually betting $5, sometimes as much as $20 a hand.