I went to the SF expo last month. It's the same show management and I think there may be many of the same vendors doing the show. I went both days and was busy all day looking through everything both days - so if you live close enough I'd recommend doing that. At the end of Saturday, you go to the admission desk and they'll give you a free pass to come back on Sunday.
These shows can be overwhelming and exhausting. I found some things really late on Sat., and was way too tired to get undressed for the 10th time. Usually there are communal dresssing rooms and it's lots and lots of fun. I knew a lot of the sellers at the SF Show because they do the Deco Shows which I always try to go to. I was with several friends on Saturday and by myself on Sunday. I bought a lot more on Sunday.
Still have not taken pictures but soon!
Linn