The 3,634-passenger Independence of the Seas launched in 2008 as the third in Royal Caribbean's Freedom class, and you'll find it sailing popular routes from Fort Lauderdale to the islands of the Caribbean in the winter, and out of Southampton, England, to ports around Europe during the summer. The high-energy, family-friendly ship offers plenty to keep everyone entertained during sea days, including active pursuits like rock climbing and surfing. An extensive, $7 million refurbishment in 2013 added a giant poolside movie screen, a cupcake café, and the specialty Italian restaurant Giovanni’s Table. The ship's Wi-Fi also got an upgrade to the line's Voom system — the fastest at sea.