No, there is no way this opens on June 7. For one, Disney will hype the heck out of this before it opens. It will not be a surprise. Expect an opening with Pandora in--what is it now?--2017? IF they open the nighttime safaris before Pandora (which I doubt), you MIGHT see Rivers of Light at the same time. But my gut feeling says this is a package deal...primarily because there isn't enough in AK to keep people there past dark with only pieces of the package open.