The Harmony of the Seas will get the largest casino in Royal Caribbean International’s fleet as part of its upcoming refurbishment. One of the three Royal Caribbean ships set for major refits in 2026, the Oasis-class vessel is set to enter drydock in Europe in April. In addition to an expanded casino, the ship is also getting other new features as part of its Royal Amplified refit. Cruise Industry News estimated that over 90 staterooms are being added to the 5,558-guest vessel during the refit. Following its month-long shipyard stay, the Harmony of the Seas is set to operate a short summer season in the Western Mediterranean.