Morimoto has been open what, 2 weeks? But I've walked into a 2/3-empty Boathouse on at least 3 or 4 Saturday afternoons, and last weekend Jocks bartenders told me they had 5 customers outside all Friday afternoon.
Being packed on a weekend night is nothing--that's supposed to happen. But restaurants that are open over 12 hours a day need much more than a couple 4-hour blocks every week. And yes, these are way above World Showcase. The LBV market has only supported a handful of this caliber restaurants previously, I don't know that if Disney suddenly opens 10 all will survive and thrive.