I just drove through all three Nashville campgrounds on Music Valley Dr. I wanted to see the improvements that the KOA had done. I will have to say I would now choose the KOA out of the three. The first two rows on the right, which are pull thru's, had been newly paved, with a nice patio and patio furniture. There were 40"+ motorhomes pulling a large trailer and had plenty of room in these new pull thru's.
Although Two Rivers gets good reviews I don't like it because of all the gravel drives (which is in need of some new gravel) and especially due to many of the sites being back-to-back sites. Some of the rigs looked like they were a foot or two from the back of the rig behind them. Too close for me. Here are a couple of pictures of the new KOA sites.