I have done Golf cart on Catalina island, rent a car in Hawaii and the Azores, subway in Rome and London, bus in San Juan PR and in San Diego, Taxi in tons of places (nothing as fun as a VW Thing Taxi in Mexico with the roundabout's after a few drinks) I have also used Lino services in a bunch of ports.
One time in Mexico I joined others from the ship to hire a private tour at the port to take us around, Just as we got off the ship and the guy was trying to get customers so a bunch of us said OK, best tour I have ever had. Five of us in a Chevy Suburban. That was 20 years ago, Mexico was safe back then and I was young. Not sure if I would do that now,