When going down to San Francisco you have to watch for 3 things - temperature, tides, and of course wind.
The temps for Saturday are going to be over 80 degrees which means there will be way too many people to buggy or possibly even kite for that matter,
the heat also pushes the winds to higher altitudes as well.
Sunday looks better with temps around 63 degrees - the tides for Sunday are not that great: low tides are 8 am and 8 pm. The winds for Sunday look to
be peaking around 5 pm at 13 mph (this of course isn't carved in stone and can change for the worse or better depending on your karma - say a few
prayers to the wind gods - it helps - NEVER CURSE THEM - it always comes back to you.
Monday looks about the same as Sunday - definitely runnable - just make sure to check the weather - not that this will stop you from going but at
least will prepare you - anything below 65 degrees will be good - temperatures above that you gotta watch out for crowds (except on Monday) - and when
there are crowds always respect the rangers if they ask you to pack up - they're just looking out for us and trying to avoid any possible problems.
To answer your question for meet-up locations, on the map below is the general meet-up locale along with a general guide on where not to go (protected
area for birds - snowy plovers). Hope this helps
we all believe is called the expansion