This doesn't sound like positive news for evenings at AK. It looks like it'll be up to Pandoras night time offering to keep people in the park.
My opinion is that regardless how nice Pandora is at night I think most people are going to stick to the typical morning shift at AK and the park won't see healthy evening attendance until it adds more attractions. Considering that both of Pandoras attractions are indoors, those experiences will be the same regardless of time of day. And I think that nice lighting and being able to see my footprints on the ground is a novelty that once seen wouldn't make me adjust my whole day of park going.