I have not read all 21 pages.
I went to SF ten years ago and it was foggy and dreary. Much more memorable was driving down the coast... Dunes, Farmland, Monterey, Carmel, Point Lobos, Bixby Bridge, etc..The shoreline and ocean views are insane. If going again, I'd check and see if anything is happening at Laguna Seca racetrack too.
Last year I was in Chicago with my Rolleiflex. Everyone was kind and no trouble at all. Physical body size and paying attention to surroundings helps a bit at that of course.