[pct-l] Two questions: KM resupply and creek crossings

[Diane Soini of Santa Barbara Hikes]

1) I thought I saw info about this recently but I cannot find it: Can  
I send packages to Kennedy Meadows General Store? Do I need to call  
or get permission in advance?
2) Is there any information (similar to that handy info on where the  
water is) on creek crossings in the Sierras, specifically places  
where the creeks are scary to cross and where you might go (up or  
down stream) to find easier/safer crossing? I intend to be there the  
usual time as most thru-hikers, hopefully.

Thanks,
Diane