Wikinic Picnics have been held annually* since August, 2007. Originally named WikNYC picnic, these picnics are held as a fun, general, informal meetup for those involved in Wikimedian and Free Culture communities.
* Although the 2009 and 2010 Wiknics were incorporated into the annual Wiki-Conference events.
WikNYC 2007 
The WikNYC picnic was the first annual Wikipedia NYC picnic, held on August 12, 2007 in Central Park. The picnic began at 3 p.m. on the Great Lawn's southwest quadrant, just north of Delacorte Theater, and ran until 8 p.m.
WikNYC 2008 
The 8th New York City Meetup event was an informal picnic on August 24, 2008 from about 2:00 to 8:00 PM. The picnic took place at Prospect Park. We met by the picnic house.
As the second annual WikiNYC Picnic, the goal was to have a relaxing, enjoyable meeting of Wikipedia editors (others were welcome as well) in one of the many great parks in New York City. As a stark contrast to the previous four meetups, this was not a Wikimedia NYC meeting, although we were still welcome to talk business if we feel like it.
The location for this picnic was Prospect Park in Brooklyn.
Wiknic 2011 
The picnicking area was "Norman's Landscape" just inside the park at Central Park West between 86th & 90th. The picnic lasted from 1 PM - 8 PM. It was easiest to come into the park at the W 86th entrance ().
Remember it was a wiki-picnic, which meant potluck. There was lots of good food!