Season Pass and Parking

We are thinking of buying general season passes but then one platium season pass just to get the "free parking". Can one person have the platium pass and get the parking paid for?

Absolutely, I'd take my family in who pays regular admission tickets at the gate or online & I'd take care of the parking

The only drawback to that will be only the person with the platinum pass will get early entry. But yes, all you need is one person in the vehicle with a platinum to get the free parking.