So Low Solo (the “Offer”) is available on new bookings made between October 1, 2026, and November 30, 2026, on select 2026 and 2027 departures. The Offer applies to solo occupancy bookings in Sapphire Suites, Sapphire Deluxe Suites, Sapphire Premium Suites, Aquamarine Suites and Aquamarine Deluxe Suites on Crystal Serenity, and Premium Ocean Views and Sapphire Ocean View Suites on Crystal Symphony. Eligible guests booking one of these accommodation categories will qualify for a reduced single supplement of 25% on the cruise fare. Offer applies only to new bookings; bookings that are cancelled and then rebooked are not eligible. Offer is capacity controlled and subject to availability. The reduced supplement applies to the cruise fare only and does not apply to Destination Fees. Changes to an existing booking, including changes to voyage, suite, or sailing date, may result in a change to the single supplement amount, potentially reverting to the standard supplement rate. Offer is valid for single occupancy only and cannot be combined with other solo traveler promotions. Crystal reserves the right to modify or withdraw this offer at any time without notice. Other restrictions may apply.