This is not a labrador specific event, but if you live near LA some friends of mine are involved in this Canine Caviar Red Carpet event to raise money for canine cancer research. It is hosted by the Highlander Pet Center, which does a lot of rescue. Might be a fun Saturday afternoon event for a good cause!
Canine Caviar Red Carpet Event! - Downtown LA Mutt Mingle (Los Angeles, CA) - Meetup