Two years ago I stayed at BW and had a very bad bus experience. As I walked to the bus stop I saw a bus leave. And that was the last bus for a real long time. Perhaps over an hour. Then several buses showed up at once, and I was fortunate to get on a read DW bus, not the rented coaches. But despite an exciting ride to the start area, we were running late. I literally ran from bus to bag check, and then ran to the start, mostly through the brush on the side of the raod as there were still many people walking. I was in corral A, and basically missed the start, I was still way back when the fireworks went off, and by the time I got there the corral was empty (except for a few stragglers like myself).
Last year I stayed at SSR, and I had friends who stayed at OKW. They had an easy walk, mine was a little further, but I had a nice walk, no traffic, and in fact met up with a few others who were walking. I met my friends and we went to our prospective corrals. I thought it was fine, and I was not checking a bag, and I just took the bus back at the end. This year I am staying at BW, and thinking of walking to start again. Looking at the map it seems to be about the same distance, just a little different route.