One thing to note; the casino will open up when you are in international waters so don’t expect to spend a port day at play. If there are no people at the casino desk, the casino is closed.
Depending on the ship there will be a majority of the room filled with slots and a few quarter machines (the ones where you try to get them to stack up so things get pushed out). There will be various tables poker, blackjack, and roulette seem to be the more popular ones.
Check out your daily planner as there will be random nights that they do specials (ex. $10 play on your card between 10pm-12am) which is a great way if you want to play but don’t want to spend any money If you re interested in poker tournaments they will also be listed here as well as bingo information and lottery ticket information.