No-shows come available at 11 AM *Day Of* the hike, but during the day before, as people come in and pick up their reserved permits, they drop off excess slots, and those become available immediately. So you should go in and try for those. There are often quite a few, so you have pretty good chances of getting what you want.
Those would be free permits, too. However, no parking pass.
But now we know -- you will be able to park along Whitney Portal Road until Monday, July 11, so you can do that and not worry.
If you watch the online, here's the window you need
, and find two slots, you should immediately call the Wilderness Permit office (760-873-2483 ) and see if they can swap (for free) the reserved permits you have for the overnight permits. I don't think you can swap your permits on-line, but not sure.