People have a hard time hating cruising. They may think they’re going to hate it. They may want to hate it. But then they try it, and they’re hooked. If you don’t believe me, just look at the numbers. When I first started writing about cruising, in the 1990s, barely 5 million people a year were doing it. These days, the number of people cruising each year is six times that level. That’s not the growth trajectory of something that people don’t love. Still, just because people love something doesn’t mean they love everything about it. That’s the case, for...