How’d you like a nine-month, world cruise? Royal Caribbean has unveiled what it calls the world’s longest cruise, a 274-night marathon that begins Dec. 10, 2023 and ends the following Sept. 10, in 2024. Not only can you celebrate Christmas and New Year’s Eve at sea, you’ll visit all seven continents and more than 150 destinations in 65 countries around the world. Royal Caribbean’s Serenade of the Seas will sail in and out of Miami and also visit 11 “great wonders of the world.” A full 57 of the destinations will be new to Royal Caribbean, including Casablanca, Morocco, Shimizu, Read more