Very complete posts tokobe and TB! Having been to Block Island well over a dozen times over the years, I can confirm the great advice you both gave.
One quick question: Is the harbormaster now reserving town moorings via VHF? I was always under the impression they were first come, first served.
Pamlico, the mooring pennant is the line attached to the mooring ball to pick up and put on your bow cleat. No need for your own.