Okay, we'll be found in
Buena Vista park from 6pm to 8pm. Standard niceness rules apply regarding notifying us about headcounts. Presumably we'll be on the north-east side, with the playground, seating, and facilities; and wind shelter as Talli pointed out.
For those unfamiliar with the MUNI system, the bus lines 6, 7, 66, 71
, and 37 adjunct the park. Additionally, the N-Judah at Duboce or the 24 at Haight get one quite close. Transit maps can be found online at sfmuni.org.
If you're driving I recommend coming up Fell and parking on the Panhandle, or up Market & Divisadero and parking south of the park.
For the bicyclists amongst us, I'll try to find some system of observation such as the SF Bike Coalition provides at events. I will be parking a monstrosity of a mountain bike, so I'd like to think it's safe.