I've never been inside a Casino, but if you are staying overnight, why not visit Cactus Joe's? Looks to be a nice sort of establishment, and who knows, you may just win something, haha.
The red brick building is the Tourism Office.
This being Nevada, the casinos are the place for nightlife. In Carson City the Nugget is the casino to go to. However, I prefer to make the short trip up to the Tahoe Stateline casinos for live shows, more excitement, and more 'glitz'.