Trip-Planning for New England

I need input!  We're taking a two week (18 day) trip to New England in June.  I'd love campground recommendations for Southern CT, Cape Cod, the Concord area (staying there 3 or 4 nights - going into Boston on the train), the Acadia area and the Mt. Washington area of NH (Gotham??) and Montpelier/Stowe, VT.  I'd love to hear favorite restaurants too...we cook a lot while camping but in New England, of course we need to eat out for the wonderful seafood!