Does security patrol this area at closing meaning after 7 pm? I am asking because at 10pm I was viewing a car in the back parking lot and I thought the park had gates that were lock at closing.

They only have a police officer that drives through every jow and then. No official security person. The gate should have been closed at 10 unless it was a few minutes before.

That's a question you need to ask the security at that place. Maybe tomorrow find out from them and that way you want end up with a bunch of wrong answers.