I agree with the above posters. We have done DP and without and like without better if we are paying. Free DP is a whole nother topic. Like your wife, I do not eat much and the kids are spotty too. I'd rather get what I want when I want it. I can't eat dessert with lunch, in fact I may only need that red velvet cupcake for my lunch!!! It varies by day with me. also, there are so many things I want to try -- yeah, that's right, for lunch, I may want an appetizer and a dessert, but no entree! For example, we always do The Plaza.
That said, we do make some TS reservations, but not too many, as my DH likes a good meal here and there. However, we have found some excellent QS for that too, esp. at the food courts at the resorts and things like 1/2 chickens and such.