For the past several years, San Francisco has had a great tradition of ending off Valentine's Day with a bang: One huge pillow fight in Embarcadero's Justin Herman Plaza.
This year, unless it's banned due to city cleanup costs and be a total downer much like how we've killed off the Halloween party in Castro; We're doing it again.
I've been going almost every year these past several Valentine's Days, and it's a blast, both for spectators and those actively participating. This year, I want to finally experience it with fellow bronies.
I would not recommend bringing your high-quality pony-related plushies as they will be totally destroyed and/or lost.
For a taste of what's in store, here's some old videos I took http://www.youtube.com/user/Nymo/videos?query=pillow
EDIT: On where to meet up, check out my comment below and/or seek this map http://goo.gl/maps/Z6bo1