There are a lot of great choices at WDW - do you have any preferences? Fancier? Quiet? Fun? In-Park? That's going to matter a lot. I mean, if you want to spend the cash, Victoria & Alberts is likely a sure-fire hit (it dang well should be!). If not that, California Grill would be nice. If you are in-park, and I know a lot of people dog on it, but Be Our Guest has always been good for me, if you want that kind of vibe (especially if you can get into the West Wing). If you want something more unique, Shiki-Sai or Takumi Tei at Epcot might be a good choice, or Le Cellier, though I hear mixed things lately. Maybe that can at least get you started.