I'm more interested on how they are going to handle passholders and the Scream Early ticket. If I'm a premier passholder, and I scan my free HHN ticket, I don't see why I couldn't utilize Scream Early because I have access to the park and to the houses.
I guess they could say the ticket is only valid for the event hours and not included in the Scream Early, but Universal tends to treat their passholders well. I don't see them doing something like that.