No!!!
The keys are entry point and date of entry. The forest service knows thing change and you might need an extra day for whatever reason. Just make sure that either your family or loved ones know you are staying that extra day. The cavalry is expensive when called out.
I can't remember the last time I exit Mt. Whitney or Trail Crest on the exit date printed on my permit.
Last edited by wbtravis; 08/18/13 09:37 AM.