Still better to use Folsom, Kip. You can't count on charging at the Rocklin facility - they have limited charging right now & that is reserved for making sure that cars in service are fully charged before being returned. That said, you could call ahead and see if it would be a problem or not. And (so far) there are no outdoor charging facilities.
The good news is that Randy Filippi is running the show over there - we've got one of the best. (And the really good news is that they're just a few miles from my house. Yay.)
I'll pick up some pics later today, but can tell you that there will be a small showroom (the design center wall is under construction).
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My understanding is that the I-80 supercharger location is planned for the Galleria area. But I don't think the actual spot is finalized yet.