The Mermaid Group is a Specialist agency dedicated to placing candidates with concessionaires operating aboard the main cruise lines. Concessionaires are not part of the shipping line that they operate their business on, rather they are separate businesses that rent space aboard the vessels and pay the cruise lines rent, plus a percentage of their profits. Candidates will be employed by these businesses and not the cruise line itself. The main industry Concessionaires that the Mermaid group recruit for include Kitchen and provisions, photography, retail, beauty salon, fitness instructors, art auctioneers and entertainment.
If you don't speak English very well, you may not have much luck getting a job on a cruise ship, as many of the cruise lines require employees interacting with the passengers to speak fluent English.