WOW!!! Wear your cowboy hat.
When I previously mentioned wearing one if you visited Boston, I was not being a smartass. A cowboy hat would be a great introductory, conversation piece around here.
Have fun in Yosemite. Last time I was there, I went from SF to Lake Tahoe (where I won our vacation money), then down to Yosemite on the way to Monterey. Great vacation.