THE SOUTHERN MOST ENTRANCE OF VENICE BEACH:
Head West on Venice Avenue, it will end at the main entrance of Venice Beach, there is a large pavillion at the beach, just left of this pavillion is a few small dune entrances to the beach, the ceremony will be at the left most dune entrance.
There is a small row of parking to the left of the pavillion and parking to the right of the pavillion, there is also parking along the street of Venice Avenue, which you might have to walk a little bit.
I hope this isn't confusing.
There will be a ceremony sign with balloons to help you locate the ceremony.