I would call ahead to Yosemite also... I believe the trailheads are booked for overnighters. You might try leaving out of Glacier Point instead of Happy Isle. Give them a call @ 209-372-0740. Last year we were able to leave from the Glacier Point trailhead when Happy Isle was booked to Little Yosemite Valley as a walk in. It's a nice trek with fewer people.
I have a permit for the same time as you, I figure I'll wing it. I don't do snow and ice gear either. I'll enjoy it either way even if I have to turn around and head back. I know there will be a cold one at the bottom.
Rodney
Last edited by Rodney51; 05/07/11 04:21 PM.