SHIP SKEPTICS
Cruises are a popular choice for vacationers who just want to unpack once and relax. They can be relatively budget-friendly, given all that's included in the base fare, and veteran cruisers know all sorts of tips and tricks to make their trip smooth sailing. Still, cruises can be an acquired taste, and there are some travelers who may simply be better off as landlubbers. Here are 15 kinds of people who might want to think twice before booking that voyage on the high seas.