The Cranberry Isles (www.cranberryisles.com) are delightful, primarily because they’re so off the beaten path. The 400 acre Little Cranberry, more commonly known as Islesford , is about 20 minutes offshore from Southwest Harbor. Diversions include a few galleries, a couple of B&Bs and the Islesford Market , where the 80-some year-rounders and 400-some summer folk gather around like it’s their own kitchen. The Beal & Bunker Mailboat offers frequent year-round service between Northeast Harbor and the Cranberry Isles.