The top-rated cruise lines as of 2015 include Royal Caribbean International, Disney, Carnival and Princess, according to U.S. News and World Report. Norwegian, Holland America, MSC and Celebrity Cruise Lines are also highly rated as of 2015, per the U.S. News and World Report.
Royal Caribbean International offers hundreds of cruise itineraries around the world. Typical cruise packages include live entertainment and passenger activities such as swimming and foreign language instruction.
Disney Cruise Lines offers luxurious family-friendly cruising. Patrons enjoy spacious cabins, complimentary children's activities and opportunities to interact with costumed Disney characters.
Princess Cruise Lines operates 18 ships and offers cruises tailored for adult passengers. Guests have access to fine cuisine, fitness classes, educational seminars and a variety of entertainment.