I LOVED my time here at Sage Creek. It is quite the drive from anywhere else in the park, but it is amazing. As we were setting up our tent on the first night, a lone bison walked through and checked out what was going on. It was incredible. There is bison poop throughout, so watch your step. Also, there is no running water on site or anywhere nearby, so be sure to pack your own. There are pit toilets. There aren't really designated sites, everyone sets up somewhere in the middle. Additionally, there are some horse facilities, but I would check on the NPS website for the particulars on that. Overall, it was a phenomenal place to camp. We got there around 4 p.m. and there were still plenty of places to set up. (We went in late August.) There is not a lot of privacy, but I didn't mind. It's free, so you really can't beat that.