You might think that after a 12-month-stretch that has seen almost no cruising around the world, cruise lines would be cutting back on the number of new ships they have on order. But that hasn’t been the case. None of the world’s major cruise lines has canceled a single ship order since the coronavirus pandemic brought cruising to a halt in early 2020. Indeed, in what may seem counterintuitive, many major lines are plowing ahead with plans to grow cabin capacity significantly over the coming years — even as they contend with the lingering effects of a worldwide pandemic on...