We stay at Clarksville RV park several times a year when we visit our SIL and daughter. Its a nice park, very well maintained and laid out. WIFI is good but no cable- but off air isn't bad. Pool was just rebuilt.
Very handy to Clarksville, the base and the interstate. The campground is a pretty busy and well liked place.
We have rarely noticed any impact from the salvage yard as it is pretty well screened-- occasionally a bit during daylight hours. There is more noise form the interstate than the salvage yard. Salvage yard is shut down on Sundays and every evening.
Can't speak to the military park