The caddies at WS are very good at advising their clients to -- in the case of the really deep bunker shot described above -- take their medicine by going backwards. In my experience, Whistling Straits is much easier for the handicap players than is the River Course. The fairways are huge, and there's always a place to run the ball onto the greens (even if the ground is not firm enough to play like a links course would play). Miss a shot on the Straits, and you usually have a way to get the ball back in play (left on 17 is the exception!). Miss a shot on the River, or even hit a good shot in the wrong place, and you're dead.
The Kohler courses are very, very, very expensive imo, but I've always had a good time there.