In May , Royal Caribbean 's Grandeur of the Seas caught fire , forcing the ship to cut short the trip . It ranks Norwegian Cruise Line highest in customer satisfaction , Carnival the lowest . Some 40 % of passengers report having a problem on their trip , the survey says . But overall customer satisfaction with cruise lines remains high , it says .
It ranks Norwegian Cruise Line highest in customer satisfaction , Carnival the lowest . Some 40 % of passengers report having a problem on their trip , the survey says . But overall customer satisfaction with cruise lines remains high , it says .