Your trip sounds like ours (except for that whole driving up from So Cal thing). We'll be in SF those same dates, and yes, there will most likely be fireworks at Fisherman's Wharf. As far as parking, ugh. We'll have a car also, and I'm researching garages because valet at our hotel is at least $50 a day. Fisherman's Wharf parking is less, although not by much. If you were to stay in a decent place in Cow Hollow/Lombard, they'd have free parking, but you'd be paying about $150 anyway (at least at the ones I checked out for my family of four.) As far as driving up from LA, two days will be plenty, but just a warning. If you're taking the coastal route north of San Luis Obispo on Highway 1, be prepared for a Looooooonnngg, windy road. It's truly exhausting. (I mean, it's beautiful, but it takes a *very* long time and gets a little scary.) If you're in a hurry, you may just want to take the coast as far as San Luis Obispo, then go inland on 101 a ways. You could always head back down to the coast to Monterey or Santa Cruz when you're closer to San Jose. Seriously, I wasn't prepared myself for that drive on Highway 1. If you are going to do it, make sure it's not at night. Very scary and not a lot of places to stop. Enjoy your trip, and good luck with the hotel situation!