It's all about the section you choose
We stayed three days at the park in August in section 6X. The sites in the park are varied. I deliberately picked our site (#146) in 6X because it looked like it was one of the larger sites and had more privacy. Which it did. The sites along that section were quite large, spacious and wooded. Many of the sites in the park are right on the roads. These were large enough that you could set up your tent or trailer further back off the road and still have a good amount of space. Next to us was a large 5th wheel camper which took up most of the site so even the large sites are hard for the very large campers. Our loop was very quiet, which we appreciated. Each site had a fire pit and picnic table. There were potable water spigots around the campground loop as well as at the dumpstation. There are also dumpsters and recycle bins throughout the park.
The bathrooms were pretty clean. The bathhouse which is located near the front of the loops for 6 and 6X were not. But the shower stalls were plentiful (probably 10 in the bathhouse in the women's side) and free. There was good pressure and hot water. Take note, though, the bathhouse only had one toilet.
The check in was easy and informative. There are ranger programs and that information is posted at the camp store, the check in and the bathhouse. The camp store is well stocked and you can get ice and firewood there.
We enjoyed the bike paths and the kettle ponds while we were there. If you have kayaks or floats, definitely bring them. The kettle ponds are great for small water craft. And there are plenty of bike paths throughout the park as well as the Cape Cod rail trail.
I was concerned that we would feel crowded and the park would be loud. But our section was just fine and we had a wonderful visit.