I didn't wind up doing the JMT last summer as planned, but did go down to Yosemite for a few days just to check it out. I flew in to Reno and shuttled to Lake View Lodge in Lee Vining. They were nice, it's right next door to the small grocery store, and the Yarts bus picks up at their front door. It is basically the southern most building in town and you could even walk to the Mobile Station if you had time.
Also, I mailed my trekking poles and tent stakes ahead to avoid any hassle and the Lake View held them for me until I got there.