Operations

Cruise Ship Career Paths:
With most cruise liners being like mini-cities (some ships can hold 2000 guests or more), with staff reaching over 3000, you can just imagine the multitude of jobs that await. There are certain sections on board a cruise ship where you can find the job that is most appropriate to you and your relevant skills or qualifications:
Restaurants (chef jobs, kitchen staff, waiters, barman, manager, etc.)
Hotel Facilities (cabin crew, housekeeping, reception, manager, butlers etc.)
Leisure Center (instructors, lifeguards, activity leaders, etc.)
Gym (personal trainers, workers, etc.)
Salon and Spa Jobs (massage therapist, hair stylist, etc.)
Land Excursion Team (tour guide, seaman, recreation staff, etc.)
Merchant Marine Jobs(captain, mates, able seaman, deckhands, etc.)
Engine Department (chief, DDE, assistant engineer, oiler, wiper, etc.)
Shops (cashiers, managers, bookkeepers, etc.)
Casinos (dealers, security, hospitality, etc.)
Entertainment (production manager, director, actors, comedians, dancers, lighting, sound engineer, backstage crew, etc.)
In each of these areas, you can find tons of cruise liner jobs that will appeal to you. Certain positions require some form of qualification whether it is in the hospitality industry, retail sector, medical wing, or maritime, but some of the entry-level positions are open for those that have no qualifications as yet, like students or high school graduates looking for a bit of adventure while they make some money. Some jobs on cruise ships will require you to have some experience in a related field.
Assistant or Junior Waiter/ess:
Job Description: To maintain and provide a high-quality service and customer care for all guests on board in the food service section. You will be required to hold a position of responsibility within the emergency plan of the ship.
Job Requirements: You need to have at least 2 years of experience in a top hotel or restaurant environment, you need a diploma or recognized equivalent, you must have an excellent command of the English language both verbal and written, and you need to be pleasant, positive, and outgoing, along with a desire to succeed.

If you just want to get an "MBA" degree then you can go ahead for part-time MBA. It won't teach you much, you will have to appear for exams and you have a degree with minimal value to help in your career.
The reason people do part-time MBA is, sometime helps them to get promotion in their current jobs. There may be a situation where your promotion is avoided since you don't have a advance degree in comparison to your peers. I have seen some big hot shot corporate biggies who don't have a full time MBA degree and their employer don't know about this. They just used a part-time MBA degree to jump few ladders in corporate world. Keep in mind some institutions offer part-time MBA degree without mentioning anything about part-time in degree certificate.