We stayed there last Labor Day, although not on points. It is a world class resort, to be sure.
One of the things that is nice is that the Kohler Company has a private nature preserve in the area. Access to the grounds is normally strictly limited to members, but they allow hotel guests to purchase a day pass. The preserve had hiking trails through the forest, and the forest was full of deer. It was totally silent during the walk, and the whole thing was very cool. There's a lodge in the preserve that served an outstanding lunch, and a skeet shooting range if you're so inclined (we weren't). It was well worth the money, which was under $10, I think.
What else... The resort had a terrific Sunday brunch, and a gazebo in the center of the courtyard serves as a combination coffee shop & ice cream parlor. The town of Kohler is amazingly nice (DW: "I bet they don't have a gang graffiti problem here!"), and a tour of the Kohler Design Center is a real blast. You'll never look at bathrooms the same way again after the tour!