My girlfriend and I are flying from Paris to San Francisco in december (from 22 to 31), which makes a short stay... We basically think we can drive from SF to Las Vegas through death valley, spend a day or two around vegas, fly back to SF and then spend the rest of our journey visiting SF.
I don't really know which way to go between SF and LV, i understand that some roads are closed in winter.
Also i'm wondering if we should spend christmas in SF or in Vegas ? or under a tent in the desert :-)
Thank you for your help !