Probably because I am old, but I like the bivi area. Less large parties, more social drinking. Access to the rock without having to drive, less noise, tremendous view of the rock in the morning if you get a nice site. Bathroom, running water, shower, cannot ask for more. I also seem to meet more people from out of the area there. Skull seems to get the seattle/portland area, Bivi gets the canadians and long distance climbers. Merely my opinion.