That's what I'm relying on now. The April release of available dates always get taken right when booking is made available so that's unreliable. Last time we picked a weekday and drove out there and got lucky but as I understand it you can only find them online now. Would you say I have a solid chance of being able to find 4 permits a few days before we drive up? Aiming for a weekday in late july. Would this be my best chance?