Although San Lorenzo Park itself is of much less interest to me personally than the wetlands landscape potential around the nature reserve area, King City may provide more varied opportunities for folks with different photographic tastes.
I'm assuming an agenda that might look something like:
Friday evening - gather at [hm]otel, meet for drinks or whatever, informally organize into sub-groups for next-day shoots
Saturday - shoot, shoot, shoot - potentially in different sub-groups at different locations around the area
Saturday evening - dinner, party, exchange of day's war stories, drawing for all-expense paid two-month sabatical on Bora Bora.
Sunday - return home.
OK, maybe the Bora Bora thing is a stretch.
But, does the rest of the proposed agenda sound reasonable?