15 for the rally sounds like a nice size group. In advance of the rally I have been researching the area for points of interest. The area is an old seaport with significant history. A few of the things I have found interesting are:
Battleship Cove, Fall River, MA.
http://battleshipcove.org/ On display are the USS MASSACHUSETTS BB59 battleship, USS JOSEPH P. KENNEDY, JR. DD850, destroyer, and the USS LIONFISH SS298, a Balao class submarine. Admission allows access to all three plus several smaller ships and the on site museum. There are also PT boats and multiple aircraft.
Valley Railroad, Essex, CT.
http://essexsteamtrain.com/ This is a scenic railroad where tourists can ride the train (steam or diesel) and ride a stern wheeler steam river boat.
Here are couple more sites with visitor info for your perusing:
https://www.tripadvisor.com/Attracti...nnecticut.html
http://www.ctvisit.com/mystic
Looking forward to seeing/meeting everyone.
Kevin