Stunning but I don't see much in the way or crowds...
Mike:
WS is sort of an odd course in which to watch golf in person. It's basically an elongated T, with the 1st, 9th, 10th and 18th holes forming the vertical portion of the T, and then the two nines -- front nine loop out toward the right, the back nine loop out to the left -- forming the long horizontal portions of the T. At least at the '04 PGA, it was nearly impossible to get on the lakeside portion of the holes fronting Lake Michigan, and because of some other landforms (the wetlands @ 5 and 6, the ravine between 9 and 18, the ravine crossing the tee shot of the 10th), there are places where you simply can't walk on the course.
It's a long way of saying that -- when I was there in '04 -- the crowds on the course are essentially concentrated in a (relatively) few spots. In addition, Kohler built the course to hold majors, and all of the corporate tents, dining facilities, and whatnot are pretty much removed from the rest of the course, away from any of the action. Thus, those spillover crowds have to make a major hike to see anything on the course, reducing the number of people "on" the course at any one time. It's a far more spread out site than many other major tourney sites.