We loved Block Island. Took our sailboat up from NC in 2013 during the summer. It was a bit of a madhouse getting a mooring. There are some transient moorings that are first come/first serve. There were others that were long term rentals that were available to transients if the tenants weren't going to be using them. As I recall, at the time you couldn't get one of those moorings until about 4 PM. You had to call the harbor master's office, and they would assign you a mooring at that time if the tenant had let them know they weren't going to be using it that night. We were witnesses to someone grabbing one of the privately rented moorings on their own, then the mooring's official tenant arrived at 9 or so at night and the boat on that mooring had to get off. Also, the moorings are a bit different that some others. As the official "mooring catcher", I remember having a hard time catching it the first time because it was different than I was used to and the wind was blowing us off. But Block Island was fun. We rented bikes and rode around. Also bought a sweatshirt because my husband wouldn't believe me when I told my husband that he needed long jeans and a jacket or sweatshirt in New England. His response was, "No, I won't! It's July!"