The Casino is a very large, and prosperous establishment. Especially in your area, since it's very touristy. Recently, it got a renovation, and it's garnered more popularity. It's one of the most important things in the area.

Theres many things to do there. Play the slots, play on the tables, enjoy the bar, meet new friends. And..if you're feeling lucky, you could go investigate the suspicious things with the owner. Make sure to never cheat though, the punishment for cheating is brutal.