Meet at Folsom and Langton Streets, north side of Folsom, at 2pm
Langton is one block west of 7th Street
It's impractical to try and negotiate big street fairs in a large group. It's easiest to break off into groups of two or three and then meet up at a designated time for food or picture taking, etc.

Meet at 2pm, north side of Folsom at Langton.