I asked at my local City Parks Dept. and was told "Drones are not allowed at any city parks." She said to contact the County Parks and ask there, but I haven't so far.
The local hobby shop told me one of the two soccer field complexes is getting an AMA permit for use of their fields. Even some of the local AMA flying fields here do not allow drones as they just want gas or electric planes and jets - no drones allowed. I've seen the Facebook page of one soccer field here where it shows one guy prepping his RC plane and a comment about "Preparing for lessons" so maybe some help from them as they are used so infrequently as it is. I don't have my AMA number yet, but I'll ask once I do and see what they say about drones there.
I also heard about the incident at the Apple Complex in San Jose where a drone guy was told he was not allowed to fly near Apple. He went back later and his drone took off over the water and was long gone like someone took it over. It might have been in the AMA magazine where the hobby shop guy saw it; "They can't shoot them down, but they can mysteriously fly away."