I'll say this quite simply -- They are selling 2012 packages. They do not have the right to alter a package after you have paid for it. They refuse to break down the price of the dining. The only way to get the price, would be to sample book multiple packages (first with no dining, then with adults dining, then with adults and children dining... and then do the same thing for each plan) and then pull out a calculator. Disney refuses to simply tell you the price. Last I checked, that's the very definition of "hidden."
Secondly, we had a whole thread about the possible savings under the 2012 DDP, projecting likely 2-3% increases in menu prices, as we historically see. And it was difficult to realistically get 20% savings, and impossible to get 30% savings with any realistic plan. You would have to get the absolute most expensive items from the most expensive restaurants for every meal, to reach 30%. 30% savings has been possible in the past, and it is still possible on the DxDP. But not realistic on the DDP. (Heck, even Disney only claims a maximum potential savings of 20%).
Example: 2012 Disney during the holidays, price per night of the DDP: $53.50
So let's do a day at Magic Kingdom:
Snack at Main Street Bakery to start the day -- Without getting specific, realistic maximum price of a snack, $5
Columbia Harbor House for lunch -- The most expensive item on the menu,
Fried Shrimp Basket - Served with Coleslaw and French Fries $9.89
Chocolate Cake $3.59
Beverage: $2.49
Most expensive possible 1-credit dinner, at Magic Kingdom:
Tony's Town Square:
NY Strip Steak - Port Wine Sauce, Baked Romano Cheese Potatoes and Broccolini $28.99
Tiramisu - espresso soaked lady fingers, whipped mascarpone and dark chocolate shavings $6.49
Beverage $2.69
Total, $59.14
Adjusted for inflation by 3%-- 60.91
Add sales tax, 6.5% -- 64.87
Total savings --- 17.5%
And that is practically the most expensive possible items in the entire Magic Kingdom.
For the sake of keeping it realistic, I didn't get the absolute most expensive CS item in the Magic Kingdom -- The chicken & rib combo at Cosmic Rays.
Had I thrown in this item, then the savings would be about 22%.
So there you go, totally unrealistic -- getting the most expensive possible snack, the most expensive possible CS lunch, and the most expensive possible TS dinner, the savings is no where near 30%.