National Thanksgiving!

So the International Thanksgiving didn't really work out but we have decided on SAN FRANCISCO!!! I'm very excited as I've never been there before!  We are staying right in Union Square and want to explore all there is to do!  Its going to be 3 twenty something girls so if you have any recommendations (restaurants, attractions) please let me know!

We are thinking of getting the Smart Destinations Go City San Francisco card.  Has  anyone used this? Loved? Hated? We are planning on doing the vineyard tour so we are hoping it will be well worth the price!