This is interesting. The story goes that Ten-Thirty-One created this event and, with support from the council office, "convinced" Recreation and Parks to let them have the Old Zoo for the Disneyland-worthy spectacle. For 2014, Recreation and Parks is originating this event as if it were a longstanding thing.
Legally, Recreation and Parks probably has to put the event out to bid. But we all know just how recent a thing this amusement park attraction really is.
Well, some other event company could conceivably win this contract. That would be fascinating.
Interested? If you are interested in bidding on the annual (sic) Halloween event in Griffith Park, follow this link to the opportunity.
Good luck bidder ... erm, bidders!