The offer applies to cruises six days and longer to all destinations, with departures summer 2016 through spring 2017. More than 700 voyages are on sale. Â
Examples of 'Twice as Nice' deals include a six-day western Caribbean cruise priced starting at $549 in an inside room, reduced from $599, and $799 in a balcony accommodation, down from $949. Plus, travelers receive up to $300 on-board spending money per stateroom.
A 10-day Alaska Land and Sea vacation starts at $1,754 in an inside room, reduced from $1,954, and $2,999 in a balcony accommodation, down from $3,204. On-board credit up to $300 per stateroom is available.  Â
A 14-day Mediterranean cruise has fares beginning at $1,949 in an inside room, down from $2,548, and $2,749 in a balcony room, reduced from $3,348. Up to $600 per stateroom in on-board credit is available.
The 'Twice as Nice' sale runs through Feb. 29 and is open to residents of the US, Canada, Puerto Rico and Bermuda.
Information: princess.com/cruisedeals.