Recent CDC sanitary inspections of cruise ships shows Princess with an enviable record. The list of ships scoring 100 has 8 Princess ships on it. NCL is second with 5 ships, HAL and Carnival each have 2 ships with a 100 score, and RCI and Celebrity each have 1 ship listed.
Fans of the sea witch should be pleased. Granted that most scores of less than 100 have nit-picky things which don't matter that much, but to have 8 vessels where nothing could be found out of compliance is quite impressive.