What you guys need to understand and I have heard this about the city council.
It's not the policing of the park. It's the city council members or their friends rolling through trying to catch infractions.
Next time a group asks to use the park the answer is no. Why? Cause city council member x witnessed you drinking in the park and city council member y saw dogs in the park and city council member z saw someone at the park after it was closed.
None of this really needs to be proven is what I'm getting at. From things I've heard these guys are vehemently against off reading. A group I know was using the same park as we do. They were like many others, one drink or a couple beers no one will notice. About 20 minutes after their event started police showed up telling them to leave. This was an off road group
On the other hand I have heard ( I know) that there has been drinking at a non motorized type event ( disc golf) and nothing was said or done. And the park they were using was reserved for the next 3 years with almost no effort