Gathering your nearest and dearest for a family reunion at sea couldn’t be easier. That's because cruise ships, with their wide variety of entertainment, cabin types, and dining options, are made for families. The special requests that come with a large group are usually not an issue either. Need a wheelchair or crib? No problem. Gluten-free meals? Got you covered. Fun activities, even on a rainy day at sea? Check. Here are nine good reasons to consider a cruise for your reunion; now all you have to do is design the matching T-shirts.