- 0 (or no Stars) doesn't mean the ship is the worst ever, but not yet rated. "Specialty" means usually a smaller ship offering deals on adventure or expedition cruises. Emphasis on itinerary/destination and unique experiences rather than onboard services/amenities/activities. Cabins are modest (as sizes and amenities), but also comfortable. 3 Stars means "Contemporary" and big resort-like experiences on bigger ships with a multi-generational clientele, a huge variety of family and kids programs, at least 2 swimming pools, huge fitness/spa centers, distinct nightlife (clubs, a casino, deck parties), several dining options. Cabins range from cozy Inside to large family suites and many connecting/adjoining rooms. Itineraries from 3 to 7-night in length (repeating, round-trip) leaving from big and popular ports. 4 Stars means a "Premium" product, medium-sized ships with higher guest to crew ratios compared to similar sized mainstream ships. The onboard experience - fewer kids, larger than average cabins with upgraded (luxurious) amenities, high-level of service, dining and entertainment, extensive enrichment programs, a luxury spa, longer itineraries (from 7 to 14 and even 21-night in length). 5 Stars means a "Deluxe" product, from medium-size to small cruise ships with deluxe staterooms, bedding and cabin amenities, impeccable service, multiple specialty (gourmet) dining options, also less entertainment and onboard activities. The itinerary is mostly port-intensive, and longer than 10 nights, with deals on back-to-back cruises. 6 Stars means "Best Luxury" on small ships, intimate cruising experiences, highest guest-to-crew ratios (fewer guests). These are mostly ships with all-inclusive cruise deals - gratuities and beverages (often alcohol) and gourmet (specialty restaurant) dining are all included in the fares (often with shore excursions and tours), spacious staterooms and public spaces, highest level of service. Many of these are all-suite ships (with different category suites). Port-intensive itineraries and exotic destinations, often offering Around the World Cruises deals.
All cruise ship ratings are based on CLIA (Cruise Lines International Association) categorizations and opinions/reviews from "WMPH Vacations" (iCruise, AlaskaCruises, EuropeCruises, HawaiiCruiseOutlet, RegentCruises and CruiseCheap) specialists and advisors. Cruise ratings also may vary on ships age, sizes, cabins/venues/amenities, passenger feedback, etc. Besides CLIA nd WMPH, other cruise ship rating sources are Berlitz Guide, Fieldings Guide, Sterns Guide, CruiseCritic, CruiseReviews and CruiseMates.