In the past, cruise ships were vessels that dependably carried passengers from port to port, offering dining and drinks en route. Entertainment could be a dip in the pool, live music, dancing or shuffleboard. (Or just loads and loads of romantic flings, if “The Love Boat” is to be believed.) And plenty of ships still focus on those classic diversions. But these days, many major cruise lines have tricked out their ships with outrageous features that seem more in line with amusement parks – or a billionaire’s mansion – such as ice bars and go-karts. Read on for the most flamboyant, over-the-top features we’ve seen onboard.