From all that I have read, we still do not know exactly what will be offered or how it will work. I can't see Disney telling people they are stuck in the resort for 2 days and not leave. Since they say it will be like a cruise, and kids clubs are hugely popular on cruises, they very well could have a way to drop the kids off while mom and dad go to the adults only bar, or out to eat at V&A, no role playing expected or needed. Looks like there will be exclusive HS access to at least the SW area, but maybe the whole park too. Maybe excursions to other parks will be offered. I say again, if there is enough exclusive perks, many people will want to do it, even without being SW fans.
We still don't know prices either, but the numbers I see people estimate do not seem unreasonable compared to Club level GF, or the treehouses, or the Polly bungalows. And those are not going out of business.