Built in 2003, the third ship in Royal Caribbean’s Radiance-class series carries just over 2,000 guests, and by today’s standards is considered mid-sized and downright cozy compared to the cruise line’s newest megaships. Refurbished in 2022 ahead of its epic 274-night Ultimate World Cruise (Dec. 10, 2023 – Sept. 10, 2024), Serenade of the Seas now looks even better with its enhanced dining choices and entertainment options.