This is what I think might happen. With Rise of the Resistance opening and it being the first one to open (before
Disneyland's) I think we may see a big spike in attendance from people waiting for one entire land to be completed, plus you are getting into the holiday season, plus there are no FPs for it so without any sort of EMH there is no advantage to staying on site which I do think they still want to promote there being a benefit to paying the higher price to stay on property
Does seem like 3 hours is way more than is needed, but I think they will want to have *something* after RotR opens through the holidays