Harmony of the Seas celebrates 10 years at sea today! 🥳⚓️ ✨ Today marks a decade of Harmony of the Seas, as she made her debut on May 29, 2016 in Southampton as the world’s largest cruise ship and Royal Caribbean’s 3rd Oasis Class ship! 💬 Have you sailed on Harmony of the Seas in the past 10 years? Drop your favorite cruise memories in the comments! #HarmonyoftheSeas royalcaribbean Follow loyal.to.royal for more!