I've heard that the Cotton Cupboard Quilt Shop in Bangor is a nice one with friendly people but have not been there myself yet. If you do go to Mt. Desert Island (where Acadia is), you will travel through Ellsworth. There is a Marden's in Ellsworth - kind of like a Maine Big Lots with lots of stuff. You can get great fabric there for only 3.99-4.99 a yard and other crafty stuff too. There is also a great yarn shop (and other crafts) called Shirley's. Very friendly there. In Bar Harbor, there is a quilt shop named Fabricate. Oh, and after Ellsworth, you will drive through Trenton where there is another quilt shop called Sewing by the Sea.
If you go to Acadia, make sure to hit Sand Beach and Thunder Hole. Martha Stewart also has a summer home on the island but we haven't bumped into her yet.
Can you tell that my Mom came from that area? We are planning a trip there just after Columbus Day.