What is the best way to extend my permit? I currently have a permit from Yosemite Valley to Red's Meadow but my plans have changed and I'd like to continue on to Mt. Whitney. Does anyone know if 1) I can call Yosemite and change my exit point and date. 2) Change it when I enter at Yosemite 3) Get a permit from Red's Meadow to Mt. Whitney? Thanks, Dan