Harmony of the Seas® is boundless with onboard thrills. Amp up your adrenaline on the tallest slide at sea, the Ultimate Abyss℠. Keep the thrills multiplying at the Broadway musical, Grease. Savour red-carpet, rustic Italian at Jamie's Italian, by Jamie Oliver. Care for a cocktail, shaken not stirred? Our robotic bartenders at Bionic Bar are on it.