We're trying it in May too, 2 weeks after you. There's been several posts out here from people who have tried all of the Italian places and they've said that Il Mulino is far and above the best. I can't wait.
I read an article in the Washington Post not long ago about the former chef there who has opened a restaurant in Washington. He said Orlando was fine but he got tired of being asked why there was no lasagna or plain spaghetti on the menu.
Assuming you are not looking to us the DDP then the best Italian is at Il Mulino's located at the Swan. A truely highend Italian dinning experiance. Not on the DDP or eligible for the DDE Card discount but work every penny to us.