Prices are per person , cruise only , for stateroom category 08 , select sailings and based on double occupancy . Cruise must be booked September 1 – October 2 , 2016 ( the “ Offer Period ”). Offer applies to 4-night and longer cruises departing December 1 , 2016 – April 30 , 2018 . Half Off Companion Cruise Fare offer provides 50 % off cruise fare of the second guest booked in the same stateroom as the first full fare guest . Offer applies to ocean view and higher stateroom categories . Certain restrictions apply . Call for details . Celebrity reserves the right to cancel the offer at any time , correct any errors , inaccuracies or omissions , and change or update fares , fees and surcharges at any time without prior notice . © 2016 Celebrity Cruises . Ships ’ registry : Malta and Ecuador . 16052489 Sailing range Dec . 1 , 2016-Apr . 30 , 2018