Do they checks cars ?

No

Not really.

Last few times I've been there they have security that checks your ticket and looks in or asks to roll window down right after you pay

No not really they just kinda stick in thier heads through your window more than they should but to avoid that just stick out your head more and lay your arm on the window of the car

They look in the windows

No. I go there a few times a month and they've never checked my car

Yea and set up check point right outside