I was fortunate enough to secure a late July permit with entry at Onion Valley and exit via Whitney Portal. I booked all my planned camping areas and the itinerary makes sense, but there is always a chance I could make progress either faster or slower than how I've initially planned.
What are the non-negotiable rules regarding timing for a longer distance permit like this? I assume the entry date is absolutely non-negotiable. But, since a lot of variables can impact the long distance hike, is there some flexibility around the exit date? I'm only wondering about a day or so in either direction depending on how well I make progress on the direct route from Onion Valley. Not trying to scheme some scenario where I stay in the wilderness three months and then try to exit on the same exit permit.
Any confirmation of how that exit part works would be great.
