Are you the kind of cruiser who loves roaming on your own during port calls? You may not like a new rule that appears to be in the works at many cruise lines. Health experts advising some of the world’s biggest cruise brands on how to restart cruising unveiled recommendations this week that included a call to significantly restrict passenger movements during port stops. The main trade group for the cruise industry, the Cruise Lines International Association, this week also released guidelines for a healthy restart to cruising that included a ban on passengers roaming ports on their own. The...