Tent camped here in September. Only one river had floats on it due to low water that time of year. Beautiful area, clear water.  If you go in the early or later seasons be prepared to pull your raft a number of times. 

The campgrounds were well maintained. One we used, and many other we saw, had small trees outlining the edges of the sites. 

We had a group of people next to use who were very loud on Friday evening until past midnight . Saturday everybody was exhausted and slept. 

As this place is near STL I imagine it's popular. I'm hesitant to return during busy season. Although there would be more float options, I imagine it would be very loud at night with lots of young drunk people. Not my ideal camping situation. 

Also, the trip was expensive. Between the campground site and floating I think it was over $200 for the weekend.