Ricky&Jack:
Yes, there are some: 1. near Big Bear in southern California. 2. where the PCT goes thru Reds Meadow near Devil's Postpile Natl. Mon.---just N of there is the side trail to the E that takes you to the large Mammoth Lakes area; there may even be movies there, but whatever the case on that, it's a fine place to relax and meet anyone who can drive up to see you; in the summer the ski crowd is gone and there's plenty to do. 3. further N near Lake Tahoe is another place; if you're NB the easiest place to bail and hit civilization is near Echo Lake; then catch US Route 50 N to the S. Lake Tahoe community.
Of course all these are excellent resupply spots.
Since I may start a bit earlier than most thru hikers to avoid the crowds, I might get to Kennedy Meadows too early to enter the Sierra if it is a heavy snow year. I'm considering Mammoth Lakes and North Lake Tahoe as possible spots to hang out for a week or two if necessary. Both are expensive for lodging but there are campgrounds. Also I figure that it should be possible to go on lower elevation "backpacking" trips ... Like heading to a lake a few miles from a trailhead and hanging out for a few days on a first come first serve permit which would cost nothing.
HST/JMT August 2016
TMB/Alps Sept 2015
PCT Mile 0-857 - Apr/May 2015
Foothills Trail Feb 2015
Colorado Trail Aug 2014
AT: Rockfish Gap to Boiling Springs 2014
John Muir Trail Aug/Sept 2013
If you find yourself at Kennedy Meadows too early, hitch out to Ridgecrest and rent a car for a week. Go visit Death Valley NP.