In 2019, 30 million passengers are expected to take a cruise, according to the Cruise Lines International Association. To compete for customers, cruise lines are spending billions to outdo each other with outrageous amenities and entertainment, from high-tech planetarium at sea to an onboard race track. Royal Caribbean alone is spending $200 million on a private island, CocoCay, in the Bahamas for guests, according to Bloomberg, and had a $115 million transformation on Navigator of the Seas...
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