A useful tool for finding campgrounds is a site called "RVparkreviews.com" There is a lot of great info on this site to help you make a wise decision. The wife and I have been using it for several years and find it to be very helpful. While your on Cape Cod, we have stayed at Lone Oak CG in Eastham, close to the beaches but few amenities in the CG. It is clean and sites are good size with many shaded sites. There is the Cape Cod bike trail at the rear of the CG. Hope this info helps
2008 Dodge Ram 4X4 Quad cab LB 2500 Cummins 6.7L TD / 2013 Columbus 320rs. Camped 50 days in 2015. RIP Angel the camping Cat, we will miss you.