Haven't they always said in the fine print that it was free general parking at all the parks for Super Grover Passholders? I don't think that is new. However, in practice, we were given Preferred parking whenever we visited SWO, BGT, AQ, WCUSA, and BGW. I think it's a way for them to not guarantee Preferred parking in case it's a very crowded day. They would rather turn you away from Preferred parking on crowded days so they can sell the available space to those who will pay.