Where else do you take what's essentially a skyscraper on its side, drop 5,000 people onto it and sail it around hundreds miles all to do it again just days later. But that's just the start...
Apart from just the size, there are some crazy things to know about cruising, from the scheduling to the design of ships to spots you'll never see. I round up some of what I think is craziest about cruising to give you a peek behind the curtain that you may not know.
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