We came for 4 nights before Thanksgiving. The only part of the park that is open for overnight camping during the off season is Quarry Pond. About half of the sites with hookups (water, electricity) are reservation only and the other half are first come first served. There are also 7 primitive sites with no hookups that are first come first served. The first night we got in after dark and snagged a first come first served spot (336) but were able to reserve one in the reservation section after everyone cleared out on Sunday (315). The location is great for lots of hikes. Bathrooms were warm and clean. There is water at the sites with hookups up until late November when they turn it off after Thanksgiving but electrical is still available. Primitive sites are $20/night, sites with hookups are $30/night. There is a store at the entrance with firewood, food, propane, gas, etc. They have coin-op showers and provide a coin change machine.