Re: California Dreaming
I've just come back from a 3 week holiday SF/LA/Yosemite.
I would highly recommend the Yosemite thing, but I think you would find it extremely difficult to get accommodation there at present. They have an online reservation system, either under the National Park Service, or their own website. It's been a while since I used it (last Jan/Feb) and I can't remember where I booked it from. The thing is to keep trying daily as cancellations will free up rooms. Alternatively you could camp!
I have been there two years in a row, both times in Curry Village which has canvas tents, cabins and a handful of "hotel" rooms (basically meaning that the room has a toilet/bath attached) but from what I could see after that you used the same facilities as everyone else. There is proper hotel accommodation in Yosemite Lodge, Wawona and Awahnee.
The experience is as the Americans say "totally awesome" - in fact nothing can describe the sheer scale - other than being there and experiencing it yourself. When we were there last year it was in the 90s, this year we had thunder storms (not all day). The vision of lightning on the mountain tops and then the explosion of thunder echoing through the valley was incredible. We hiked, bussed, drove, cycled, rafted - got eaten by mosquitos etc etc. It was a wonderful experience and one I would intend repeating.
We drove from SF to LA on the scenic route, but as our final destination was Disneyland (2 kids) we didn't really explore all the lovely towns along the way, with the exception of Santa Barbara. Beautiful place. In fact John Cleese was on TV last night expounding its virtues. If you go to LA, while it isnt the most attractive of cities, it has quite of lot of places to visit, Universal, Santa Monica Pier, Griffith Observatory, Hollywood Blvd (we just drove in to see Mann's Chinese Theatre on our way from LA to Yosemite and the Black Entertainment Awards were on). While it was too early for all the celebrities to arrive, we did get "Brandy's" rehearsal (I didn't know who Brandy was, but my 11 year old daughter was spellbound!). It's fun to watch out for celebs while driving around. None this time, but last year we saw Robin Williams.
The Napa end of things wasn't really my cup of tea (being a non-drinker) - all the vineyards look the same to me and wine tasting isn't something that would turn me on, but apparently the whole "wine tour" thing is extremely popular, However, it is nice to see the huge mansions (visions of "Falcon Crest").
SF is spectacular too, make sure you go to the Headlands in Marin Co, and look down on the GoldenGate Bridge (fog permitting).
I'm still suffering from jet lag, so I may be rambling a bit. These are my thoughts for what they are worth.
Hope your trip is great.