I’ve noticed that several parks in the NYC metro area have been “carry out your own” for many years; there has been no money to pay for this stuff for years. Doesn’t work well at any beach near large populations; trashy people will bury trash in the sand or let the wind carry it away.
Years ago, we tried to go to some beach in FL. It was nothing but ash tray garbage. I’m not kidding, more cig butts than sand. I’ve yet to figure that out. It’s like it was intentionally gathered up, stored over years and then dumped on the beach. Really weird.