I've been going to this park for a couple of weeks and unfortunately the reviews about this park being clique-y is true. They even take group pictures together... But the park itself is nice. There is a place for smaller dogs which is actually an agility course so technically any dog can go in there. The gates are usually open so dogs run in and out. Lots of trees and running space.
The people who are there all the time could care less if their dog acts aggressively towards your dog and are too distracted with each other to notice when their dog takes a dump. However, the park is for dogs so I try not to focus so much on the annoying people who own them.