We are planning on doing the DxDP in October.

I am crazy so I sat down & went through every menu figuring out our costs to make sure it would be a good plan for us. Well, we are two adults so the plan will cost us $140 per day, we are staying for 11 nights, for a grand total of $1540.
If we didn't have the Deluxe Dining Plan we would spend $1715 on meals (figuring VERY conservatively) + $66 snacks (figuring $3 a snack) + $25 mugs= a grand total of $1805.
So...on the DxDP we will save $265. Any savings works for me.

I think even if we broke even it would work for me as a pre-paid convenience.
On a tip side note, we will need an additional $305 for tips (figuring 20% for tips and 2 of our meals include tips-CRT & Poly Luau).
Here is our schedule (although no ADRs made yet b/c it's too early).
October 20 Arrival Monday at Animal Kingdom Lodge
F&W Festival Snacks around the World Showcase
Marakkesh dinner
October 21
Grab snack credit breakfast @ Mara
Cap N Jack’s lunch
The Wave at Contemporary (It should be open by then I think)
MNSSHP
October 22
Grab snack breakfast at Mara
Universal/
HHN
October 23
Hollywood & Vine breakfast
50s Prime Time Café lunch
Spirit of Aloha dinner show $110 includes tax/tip
October 24
Donald’s Safari Breakfast
Yak & Yeti lunch
Jiko dinner
October 25
Akershus breakfast
Coral Reef lunch
Spoodles dinner
October 26
Boma breakfast
Tutto Italia lunch
CRT dinner $82 includes tip
MNSSHP
October 27
Chef Mickey’s breakfast
Wolfgang Puck Cafe lunch
Yachtsman Steakhouse dinner
October 28
Ohana breakfast
Sci Fi Dine In lunch
Mama Melrose Fantasmic dinner
October 29
1900 Park Fare late breakfast
Tony’s Town Square lunch
California Grill dinner w/fireworks
October 30
Boma breakfast
Le Cellier lunch
Rose & Crown dinner
October 31
Crystal Palace breakfast