We are flying into Las Vegas and travelling to Palm Desert with the sole purpose of seeing Death Valley and Manzanar. We were planning on staying 1 or 2 nights in or around the park. Any suggestions on "must sees" or routes to take within to the park to maximize our time. Also, will there be any relevant passes that will be an issue this time or year? Lastly, I would love to see "The Racetrack" of moving rocks, but I hear it is quite a trek. Any advice?