The articles on the visit seem to emphasize that the Ahwhanee was Stanley Kubrick's inspiration for the set design in The Shining.
William and Kate to stay at haunted hotel that inspired Stanley Kubrick's The Shining
http://www.dailymail.co.uk/travel/article-1392444/Prince-William-Princess-Catherine-world-tour-Royal-couple-stay-hotel-inspired-Stanley-Kubricks-The-Shining.html
Apparently they're trying to stay in the Presidential Suite. I'm curious what the security is going to be like. Oprah's visit is going to be nothing compared to this. I'm also curious as to whether or not the paparazzi are going to have to get photography permits.
Older articles only mention that they're coming to Yosemite:
San Francisco Getting a Royal Visit: Report
Reports say Prince WIlliam & Duchess Kate will come to San Francisco in July.
http://www.nbcbayarea.com/news/local/San-Francisco-Getting-a-Royal-Visit-122445614.html