Online reservations showed most sites booked, but on a weekday in September I had almost the entire campground to myself!  A short approximately 3 mile out and back trail starting at the camp site takes you to a nice overlook of the South Platte River as well as to the Riverside campground on the river.  In the campground I had consistent LTE data connection via Verizon and not far up the trail was getting 5G.