https://www.oceaniacruises.com/legal/promotion-terms/
Guests are required to notify Reservations when requesting the FREE CRUISE. The awarded FREE CRUISE must be taken on the guest’s milestone cruise and is Cruise-Only, based on double occupancy, subject to availability at the time of booking, is not combinable with public promotions, excludes government taxes and fees and cannot exceed 14 days in length. The FREE CRUISE must be approved and will be placed as a guarantee until stateroom category has been assigned, upon authorization from the Oceania Club. The FREE CRUISE cannot be applied to any of the Around the World Voyages. For cruises over 14 days in length, the cruise cost will be prorated for the additional days. Stateroom category will reflect the accommodations most closely matching the typical category selected by the guests on prior voyages. Reservations for the FREE CRUISE may only be made 180 days or more prior to sail date. Other restrictions may apply.