I stayed at GC last October and although we didn't get to eat at Napa Rose, we went thru it during the hotel tour and it looked gorgeous!! I think you're right, nothing wrong with two anniversary meals! (Maybe you could have lunch at Blue Bayou one day and dinner at Napa Rose another?)
As for other meals, we had MANY during our last trip, and I was especially pleased with the restaurants in DD. We ate at Y Arriba Y Arriba (which I understand from another post is closed, too bad!), Naples (for lunch, VERY good!), and La Brea Bakery (breakfast, lox and bagels, excellent!). We also ate at ESPN, and while the portions were large and the food was okay, I don't know if I'd go back (waiting 30 minutes during slow season at 3 in the afternoon, plus having to leave our ID with them, for "okay" service and food). We also had dinner at one of the DLH restaurants, but the name escapes me at the moment.
Oh, and I'd like to give a big thumbs up for Storyteller's Cafe. We had two meals there, a buffet breakfast (included in our package) which was excellent and offered many choices, and a sit down dinner (they have buffet as well, but we ordered off the menu since we weren't hungry enough for buffet). The corn chowder is absolutely to die for!! (And although I love clam chowder, I'm not normally a huge fan of corn chowder, but I went with the recommendation of the person who gave the hotel tour.) They also had a great salad with pears, nuts, and cheese on top of mixed greens.