Shoreline?
That's what we'd always send new Boy Scouts down to the commissary at summer camp to pick up 75 feet of.
Cayman is a tender port, if that's what you're asking. You -- or, rather, the captain and his pilot will -- park the boat a few hundred yards off Georgetown, and almost immediately a swarm of little tiny boats will line up along side to collect passengers in groups of a hundred or more, and ferry them those few hundred yards to a dock, where they will all file out and either get a posed picture taken or not.
Once on the island, you get to various locations by the standard ways: walking, jogging, running, cabbing, or busing.
While Seven Mile Beach is technically within walking distance -- you can get there and back during the cruise stop -- most people would suggest you take a cab or do an excursion, either through Carnival or one of the local outfits, which are quite reliable.
Desperately seeking 10th cruise for the free laundry.