5. Preview who’s on board.

The best way to have a memorable cruise experience is to make friends — or at least travel with like-minded people. Your fellow passengers can make the difference, and this holds true whether you’re 8 or 80. We've watched older travelers bond by the pool, young couples connect at wine tastings, and even toddlers discussing characters who were clearly having more fun than if they hadn't met.

Our advice: Carefully read our expert ship and line reviews to see who else will be on board. Cruise line brochures and websites can also provide hints, so be sure to scan the photos. You don’t want to be the person who expected casual and ends up on a formal cruise, or who wanted quiet and gets stuck with a rowdy crowd.