Re: Newport/Martha's Vineyard/Nantucket--your feedbacked needed!
A taxi from Newport to Q.P. is a long $$ ride and I think just the bridge tolls are up to $4 now. From Newport to Vinyard Haven M.V. is a day each way and moorings (same area as the ferrys stop) are readily available unless the swarm of race locusts have totally booked up the area for that couple days in their summer migration around the islands...... and yes that does happen every year so check ahead.
Wickford/Narragansett Bay RI