For a limited time, book select categories and 3rd and 4th Guests Sail Free when booked as the third and fourth guests in the same stateroom, giving you extra savings on top of unforgettable adventures.

*Discount is automatically included in the price of the cruise.

Offer Terms: Free 3rd & 4th Summer 2027 applies to new, individual, and named group bookings at prevailing rates made September 3 - 14, 2026, on select sailings 3 nights and longer departing on or after September 4, 2026, including all 2027 Summer sailings between May 28, 2027 - August 31, 2027, and provides $0 cruise fare for additional guest 12 years old and younger as of the departure date booked in the same stateroom as the first full fare paying and second guests. Taxes, fees, and port expenses are additional and apply to all guests. Free 3rd & 4th Summer 2027 excludes all sailings departing on or during any of the following dates: Alaska Cruise Tour sailings departing May 15 - September 11, 2026; November 19 - 27, 2026; Chinese New Year sailings onboard Navigator of the Seas departing November 29, 2026, December 3, 2026 and December 10, 2026; December 17, 2026 - January 4, 2027; Chinese New Year sailings onboard Navigator of the Seas departing February 4 - 8, 2027; March 5 - April 4, 2027; Alaska Cruise Tour sailings departing May 14 - September 17, 2027; November 18 - 26, 2027; December 16, 2027 - January 5, 2028; March 3 - 31, 2028 and April 7 - 17, 2028. Combinability: BOGO60, Free Kids & Teens Summer 2027 and Free 3rd & 4th Summer 2027 are combinable with each other, as well as promotional OBCs, Next Cruise offers, instant savings, restricted discounts (for example, Seniors, Residents, Military), Promo Code driven offers, Free Upgrades, and Shareholder Benefits. BOGO60, Free Kids & Teens Summer 2027, and Free 3rd & 4th Summer 2027 are also combinable with Crown & Anchor discounts. BOGO60, Free Kids & Teens Summer 2027 and Free 3rd & 4th Summer 2027 are not combinable with any other offer or promotion, including, but not limited to, Ultimate World Cruise, Standard Group, Interline, Travel Agent, Travel Agent Friends and Family, Weekly Sales Events, and Net Rates. General Terms: Instant savings amount shown in USD and will be converted to currency used for cruise purchase applied as instant rebate to the cruise fare at checkout reflected as "Dollars Off" or "Savings". All other charges, including taxes, fees, and port expenses, where not included in the price displayed are additional and apply to all guests. Changes to the booking may result in the removal of the offer. Individual reservations may be transferred into an existing group, assuming required criteria are met; full deposit will be required at time of transfer. Failure to apply the required full deposit amount may result in the booking cancellation. Single occupancy guests paying 200% cruise fare are eligible for full offer; single occupancy guests paying less than 200% cruise fare are eligible for a prorated amount of the offer. Offers available to residents of United States, Canada, Puerto Rico, and select countries in the Caribbean. Prices and offers are subject to availability and change without notice, capacity controlled, and may be withdrawn at any time. Royal Caribbean International reserves the right to correct any errors, inaccuracies, or omissions and to change or update fares, fees, and surcharges at any time without prior notice. Ships' registry: Bahamas. Promotions, including discounts and savings, are automatically applied to the cruise fare and are valid for new bookings only. Modifying an existing booking with an active promotion may result in the loss of the offer. Promotions are not applicable to special fares such as group rates, military discounts, and similar offers.