I played Olympic two weeks ago, and the course is much more open than it appears to be on TV. For me, i never had any sensation of hitting down a chute. Of course, i didn't hit from the tips either. In fact, i was surprised at some of the rather generous landing areas. The tree cutting program has changed the look of many holes, not the least of which was #4. With a lot of trees removed, wind could be more of a factor below the tree line. Regarding walking, I walked and carried and did not think it that difficult, but then I often walk. Very few level lies, but this isn't Florida.
Finally, the view from the tee box on 18 is amazing. Looking up towards that bowl with 20K surrounding it surely makes the heart beat faster. On Sunday with a lead... Good luck keeping it steady. You can't see the landing area and when you reach it, you feel like you are looking straight up with the whole bowl and bleachers exaggerating the effect. Fantastic finishing hole.