I've been doing some searching online and am thinking maybe Martha's Vineyard is the best place along the way to stop so we can be there on Sunday 1 August. My daughter and her friend have flexibility to take a ferry back to the mainland late Sunday.

Here's the itinerary I'm thinking about - please provide feedback:
Friday 30 July
9:30am Depart Newport to Oak Bluffs Marthas Vineyard (slip with dock facilities and showers) - Stay through Monday Morning 2 August.

Monday 2 August
Depart Oak Bluffs and sail to Beverly Yacht Club or Barden's Boatyard in Marion, MA (on a mooring or potentially a slip - investigating available facilities)

Tuesday 3 August
Depart Marion mid morning. Target 11:30am to 1:30pm - Be at Buzzards Bay end of Cape Cod Canal to maximize SOG with current (Max Flood 3.58 kts @ 12:38)
6:00pm - Arrive Scituate Harbor Yacht Club (Sunset 7:58pm) Dinner, showers, etc in Scituate
Let me know if you plan on being in Scituate Tuesday night so I can coordinate with Scituate Harbor YC for moorings

Weds. 4 August
Approximately 4 hour cruise from Scituate Harbor YC across Mass Bay to Marblehead. The J/30s will have moorings courtesy of Boston YC for the J/30 North American Championship. Others will need to coordinate with the harbormaster for moorings or reservations at the town dock at Tucker's Wharf. Someone from the Rhapsody crew will drive Bill & Cindy's car to Marblehead.

Thurs 5 Aug - Sun 8 Aug
J/30 North American Championship (registration stuff on Thurs). Plenty of parties and events in Marblehead. Recreation event tickets will be available for the NAs for those who want to party with us. Pam & Larry Titus will have Dream Boat there at Tucker's Wharf as the official Rhapsody party platform. Rhapsody crew has reserved rooms at Boston YC. We have one parking spot for each room.

Monday 9 August
Depart Marblehead - Rhapsody plans a straight through trip back to Newport, but others may want to stop at places along the way. In order to catch the favorable currents, depart Marblehead @5am Monday. Be at Mass Bay side of Cape Cod Canal 11:25am-1:25pm to maximize SOG with current (Max Ebb 4.5 kts @ 12:25pm)