My children are dairy, soy, egg, peanut, and tree nut allergic. I spoke with a chef from Tony's and they have special meatball mix that they use that is free from all of the above. I'm guessing it's also gluten free (but I'm not sure). Also their pasta is egg free-or at least they have an egg free version.
We leave tomorrow for WDW and my kids are VERY excited about the spaghetti and meatballs and the babycakes at DTD.