Universal Resort Orlando has a surprisingly large number of "California Grill" quality or better restaurants for such a small resort. I love Emeril's Orlando, Emeril's Tchoup Chop, The Palm at Hard Rock Hotel, and BiCE at Portofino Bay resort. And I have never had a problem getting same day ressies at any of them except for Christmas Day Dinner where we ended up at The Rosen Shingle Creek for a fantastic buffet.
I think that density of high end dining locations is certainly due to the fact that so far all of the hotels there are in the "deluxe" category (speaking in Disney terms). I only visited the Royal Pacific and it had a wonderful classy but relaxed feel about it and this is the simplest one of the bunch.
Interesting that you mention Emeril's Orlando as I was just thinking the other day whether this would be worth a visit. It seems pricier than Tchoup Chop and since I don't eat seafood I was not so sure about the menu. But then I would love to experience a new type of "American cuisine" - I always try to eat as ethnic as I can when I am in a foreign country. So I gather, you would recommend eating there?