You can explore the most remote rugged environments by day and come back to the security and comfort of a clean stateroom, a hot shower, a well-prepared meal and good company. Ships are friendly places, and there is a sense of camaraderie, usually with sharing the day s experience on the top deck at the end of the day, getting to know fellow passengers and making new friends. Cruise passengers now are all ages. On some cruises physical condition is important, but on most of the cruises you have a choice of whether to take easy strolls or difficult hikes, do whitewater rafting or leisurely paddle a canoe in a quiet cove, dive a reef or be lazy under a palm tree on a secluded beach. However, on many small ships there is a chance that there will be some wet landings from a zodiac or tender directly onto a beach so you should be agile enough to handle that.
Single people go as well a couples.
In fact, the camaraderie of the small number of passengers makes it easy to make friends. Small ship cruises are good for family travel too. Some have special activities for kids, but even if they don t, there are plenty of physical things to do so that boredom is not a problem. A ship is a secure environment where children can enjoy their experience with their parents or be safe doing things without them. They re usually firm friends with one or two crew members before the cruise is over.