I can only speak of my personal experience. Yes, this is a basic FCFS campground. And it was clean, and well kept. We stayed in site #13, as we had a 33ft. 5th wheel and needed the space. And is the best site in our opinion. [Not too many sites accomodate larger trailers. Lots of room for smaller trailers and tent camping.]
Site #13 is at the top of the campground, shade and sun, close to stream [can hear it from site], very large site, private. We stayed 8 nights.
Campground host Amy was extremely friendly and helpful. She andswered our many questions about the campground, where we could find water and a dump for our trailer and places to go visit on the Mirror Scenice Byway. We had a great time at Yellow Pine and in the area. Would reccomend campground, providing you only need restroom and trash services. Town was conveniently located about 7 miles from campground.