depends on what kind of casino you're going to.
The ones around here - the non-Indian, non-Nevada type, are dark, but clean. The brightest thing in the room is the beacon of the ATM beckoning you to redeem yourself and win money. As already mentioned, bring your cash that you're willing to lose, and DO NOT use the ATM.
Drinks can sometimes be suuuuupper cheap. So if you're lookin to drink a bit and play with money, it can be fun.
But I only used to go to play poker. Fuck the other games.