Meet me at Java Beach Cafe about 3 blocks from the zoo. We'll either eat lunch here or in the zoo and can come back to the Cafe afterwards to hang out, optional.
I haven't been to this zoo in years, supposedly it's larger than Oakland's zoo. My grandchildren go there all the time as it's free for under 3 years old.
From the web site, www.sfzoo.org, the zoo looks fairly large but looks walkable in a few hours. I walked the British Museum in Victoria on a free day with 600 children on site.
Admission is $15, might be a charge for parking unless it can be found on the street.
If anyone wants a ride from the east bay, just tell me if you're within my area or just leave me an email message.
Directions to the zoo are detailed so you'd have to go to www.googlemaps.com, 1 Zoo Road, San Francisco.