We went to Sioux Falls for a concert and added a few night to our trip to camp at Blue Mounds. Sites were not full on the weekend, even less so on Sunday night. Do the prairie tour, interesting and worth the time and the $15. Some sites were smaller and closer together than others, so your experience may vary. But people were quiet and respectful, so I’m sure you can enjoy your stay. The naturalists here are friendly and knowledgeable, take advantage of programming! Visit the nearby Pipestone National Monument while in the area. Misc notes: Others have mentioned clean facilities, we did get manure smell with the breeze, but very few mosquitoes, great sunsets!