What about Supervisors and Managers ?

Next up we have gaming supervisors. Known simply as "pit bosses", these supervisors are like guidance councilors and hall monitors wrapped in one. Not only is it the job of a pit boss to ensure that all employees are completing their duty correctly, but they're also in charge of hearing the complaints from both the gamblers and the staff. Their job is to mediate, forcibly if necessary, and keep the casino floor operation smoothly. Pit bosses average a little over 40k per year at onshore casinos and on cruise ships it's more or less very similar.

As a pit boss, just like security guards, you need to keep the kid gloves on most of the time. When someone comes to you with a complaint, they may be livid and yelling. Meet hostility with compassion and a gentle tone. It's your job to remain in charge of the situation.

A gaming manager is another option of employment. A gaming manager not only has to oversee the entire casino's operations, but they're also responsible for creating and tweaking gaming policy based on any legislation they are regulated by. Gaming managers can easily make over 70k annually ( on American flagged cruise ship casinos ).

Gaming manager is a highly-trained position. You must be well aware of all legislation which could possibly have any jurisdiction on your casino and have previous experience being in charge. What I would put accent on is that although a casino on a cruise ship is by it is own in the middle of the sea, in most ways they are still organized in very similar ways to the on-shore ones.

I'm a Maintenance Man

The slot machine technician is the person who keeps all those "one-armed bandits", i.e. slot machines / gambling machines in running order. Because these are either mechanical or electro-mechanical, there's always wear and tear and they need continuous service and maintenance to work properly. Normally the slot machine technician works together with the locksmiths These people need specialized training and do the same work whether the casino is onboard or ashore. These could be the only casino people who are working in the casino when the ship is in port.

I want to be a Cashier

All casinos employ cage cashiers. These people work behind secure glass or bars, changing in money for chips and vice versa. Only the most trusted applicants will receive this position. As a cage cashier, you will inevitably meet swindlers claiming that they have been ripped off. It's your job to contact the floor managers or security when this happens.

Summary

Additionally there can be some administrative staff, like accountants and other office clerks.

Overall, the main difference between working in an onboard and onshore casino is that employees can and should afford to be more patient with the many beginners they would encounter on a cruise ship. So the important thing to remember is that cruise ship casinos are constantly competing with alternative shipboard activities.

If you're thinking about a career in the casino industry, your options are vast. Just remember to apply only for positions you can handle proficiently. Casinos are huge businesses. Any dereliction in your duties or "gross negligence / carelessness" will result in immediate dismissal.

Waiters / waitresses, chefs and cooks, etc. are of course catering personnel, and as such not specifically employed by the casino.