You can stay there for free for a maximum of 5 days without any problems. You drive into the parking area and on the right side there are blue marked areas where you are allowed to stay overnight for free. Opposite these blue areas is a dishwashing station. There are several trash cans. There were dozens of pelicans at the dishwashing station. They always seem to be there. People come to feed them. You can also explore a small circular path there. Great spot. 😃👍

Not free any more, requires registration for a permit via visitor centre or online. Currently 13.50$