Here's my costs per day... TS meals included entre, dessert, and sometimes a glass of wine or other speciality drink. All meal costs include taxes(6.5%), but not tip, as you would pay that either way.
Meals
DDP (QS) 15.52 15.96 21.82 25.49 15.20 11.50 30.35 total 135.84
Meals DDP (TS) 63.25 55.38 50.32 51.12 72.76 55.38 22.36 total 370.57
Meals DDP (snacks) 15.96 4.25 60.39 total 80.60
Mug 17.00 total 17.00 week 604.01
Our TS were Rose & Crown, Tuskar House, Homecomin' (DS), Via Napoli, Hollywood & Vine, Tony's, Beaches & Cream
Our QS were Cosmic Ray, Electric Umbrella, Satu'ill, ABC Comm, Gaston's Tavern, French Bakery, Be Our Guest Breakfast
Snacks went for a couple of desserts at QS or an ice cream, but mostly for bagged snacks.
Would I have eaten differently without the DDP? At meals, no. We have our favorites, and eat at them almost every trip. Sometimes we will do a Signature meal, but not this time.
I probably would not have gotten the bagged snacks, and next time, (if we use the DDP), will probably use more snacks for breakfast items, which this time, I paid out of pocket for (usually around $8-9).
As for the Mug...I don't think I would buy it if I didn't have the meal plan, as I usually don't drink soft drinks, and usually bring it home for morning coffee.... I already have quite a few, but over time, they look pretty ratty, so a new one is nice.
When we use the plan, we don't use it to maximize the value - we use it for convenience and choose our menu items according to what we are in the mood for. It's just a nice bonus when we break even or better.