Sloane will dig all the sights and sounds, even at her age. We got Tatum an awesome hat there that she plays with to this day. Makes for great pics too.
Many people will say Union Square has the best shopping but, I disagree. I think Haight does- it has funky shops, fantastic restaurants and bars, Amoeba music, Ben and Jerry's, vintage clothing stores, and Golden Gate park is at the end of it.
Spent a whole day here and could have spent many more. It's not cheap and there's a lot to see so I would start early in the day. The crown jewels are just incredible and everything is displayed so well.
Stopping at the overlooks on both sides of the bridge is always fun and awe-inspiring! Then, drop down to Sausalito for a nice lunch on the Bay, gelato afterwards, and then onwards with the road trip...