I think AK will become more congested after Pandora opens. So, a FP or ADR that includes ROL will serve you well until the new DHS lands open and divert the crowds. I think the second show of ROL will be worth a FP in the beginning, which isn't a common sentiment. Plenty of people will want to go SOMEWHERE after looking at the Pandora crowds, and attempt to wait them out until later during EMH.
We didn't feel there was enough value in the dining package to choose it over a FP. Seating isn't "better" for either. Arriving early with either seems to be more important than deciding between the two.