Glass-walled showers that extend out from the ship, private deck whirlpools, and unlimited in-suite spa services—living the high life on the high seas has its perks. With an ever-rising demand for luxe experiences aboard the world’s finest cruise ships, cruise lines have made an art of amenities. White gloves open doors to top-level suites with limitless views and impeccable interiors that are certain to impress. If you’re one of the few lucky ones staying in these sumptuous suites, there’s a glass of bubbly ready for you upon arrival, perfect for a toast as the butler unpacks your belongings. —Zachary Laks