Cruise ships offer many of the essential elements older Americans need to thrive: organized activities, a decent level of medical care and, most crucially, a built-in community of like-minded travelers. Upgraded connectivity has also allowed semi-retired cruisers to make a cruise ship their new retirement home.
For nearly two decades, Jeff Farschman, 72, has enjoyed leisure cruises to exotic ports of call, much like many other adventurous retirees.
Farschman, on the other hand, lives...