Some casinos are 18+, as long as no booze is present.

If at a casino, i like to spend my time at blackjack (i have learned how to count cards so i put the advantage back in my position over the house) craps, becasue good streaks can make you alot of money and Caribean stud if i want to stick around for the night. This past trip i tried all of these and walked away with 1500 dollars.