My family and I loved this little campground. It was well maintained and had great activities for the kids.
Wax Campground is located on Nolin River Lake, which is managed by the Army Corp of Engineers. Translated; well maintained, picturesque and organized.
Off Western Kentucky Parkway or KYI65 depending on where your coming from and an interesting drive through the Kentucky countryside will get you there. Nearby is Mammoth Cave National Park, also worth a visit but reserve your spelunking way ahead or you ain't getting down under;)
Wax Campground is all about the water. It's directly across from the Nolin Lodge and Wax Marina. Some of the sites are right above the lake and easily accessible with your watercraft or fishing rods.
The sites are packed in the loops they are in, you will see a lot of your neighbors when on shore. Some of the sites are better shaded then others.
One thing I learned about The Army Corp of Engineers is that they will close certain loops so that they don't have to carry them on their books. So when you arrive it may be possible to scope out another spot and change sites. I wouldn't rely on that and skip reserving though.