We have a small group of midwest flatlanders coming to Yosemite for our first time in the middle of the week of 9/21. We have a few midweek nights reserved at Housekeeping Camp. We've also arranged a point to point hike from Glacier Point (1st car) to Little Yosemite Valley for an overnight stay and hike up Half Dome the following day. We can then either return to the main valley (2nd car)that same day or spend another night at the LYV campground. We already have our wilderness permits reserved.
I guess I'm just looking for advice and tips on the necessity of parking permits, weather this time of year, availability of food storage/lockers in main valey while we are in the backcountry. Any advice or general tips would be appreciated. While we are newbies at Yosemite, we've have the Tetons, Yellowstone, and Smokies in our past.