The Duvall Loop City Bus is free and goes in a large well defined loop. It will not, like some city busses, take you off to places that are good for commuters, etc. (Note there are several paid bus/trolley services as well). We walked around the marina area (get off the ship, go straight and left), DW found a nice quilt/fabric shop. We always have lunch at the Southernmmost Beach Cafe, which feels like the Bahamas.