copied from the Permit Options on the left
For a Mount Whitney Zone (main trail or North Fork/MR) day hike permit, show up at the Visitors Center by 11 am the day BEFORE your entry date. Any cancellations that have not been re-reserved will become available then. If unsuccessful, report back to the Visitors Center by 2 pm that afternoon. No-shows for the next day become available at 2 pm.
Thanks - now I understand.
They are free after 11am for the cancels and reservable up until then.
For the no shows(who did not even take the time to call) by noon - window of two hours for logistics(and possible excusabable delayed arrivals) and then free for any who show up. But if you cannot be at the IAC by close of business - you would have to pay the $15. reserve fee to have them left in the overnight drop box.
Thanks to all who responded