They originally weren't, but nobody cares now. The cops come by and kick you out every now and then but they don't do anything else to you, you can go back in as soon as they leave.
yea ive been, i had to sit there with a broken skateboard for 2 hours once, and the guy there was mad weird, and do they still make you wear full padding, like wrist guards, and all that gay crap?
helmet and knee pads, that's it. the weird guy got fired last year, the skatepark is gonna open up later this month when they find a new ranger to work there.