I think the Mystic KOA, former Highland Orchards in North Stonington CT is open year round. You can visit all the sights in Mystic - aquarium, Mystic Seaport, casinos, subase - lots of tourist attractions. Certainly enough to do for a 3 day visit for the extended family.
Mystic KOA Campground | KOA Camping Connecticut
Sir Logan Foxhall, OAP, OJP, NAC, NCC, CL1, PS1, PJ1, CGC
Sir Blaze Foxhall, Let the Games Begin!!!
The more I try to understand people, the better I like my dog.