Just a note, if you take one of the shuttles that handles many people at the same time such as Mear's. We had to wait in line, purchase our ticket at the air port then wait until they had a full load of people and then many stops on the way to your hotel. We just wanted to get to our hotel.
A taxi is "private", you can get one as soon as you get off the plane and it takes you directly to your hotel. Or you can make arrangement with a limo service and they will be waiting for you at the air port. With a family of 4 it is about the same price as the 'Bus load O-people" Services.