Okay, as someone who has only been once (this past January), did the DDP, and very much enjoyed nearly every meal, I am going to insert my 2 cents.
Haven't you ever eaten at your favorite restaurant back home and had a poor dining experience? I know I have. I have gotten rubbery shrimp, bland lobster, tough steak, or just bland food in general from a fine restaurant that usually serves great food.
Back home we usually atribute that to a new cook (?). But we return and are usually delighted the next trip. Food quality is very subjective. And sometimes quality is not consistant. With the exception of "Signature Dining", which hire Chef's not Cooks, consistancy from one evening to the next will always vary.
I'm looking forward to doing the DDP again as it takes the stress away from budgeting for our meals. Is the DDP perfect? Hardly. But it works for us and so far... the food has been very good!