I would suggest not getting the deluxe dining plan. You get A LOT of food on the regular dining plan for alot less money for an adult per day it's $37.99 for the regular vs. $69.99 for the deluxe. For kids 9 & under it is $9.99 vs. 19.99. In order to really try to get your money's worth out of the Deluxe plan, you would need to eat three meals a day in a sit-down restaurant (counter service is still available, but not the best use of plan, money-wise), so this will take alot of time each day, lessening the time you would have to play in the parks. We (2 adults, one teen, and an 8 yr old) are going for 7 days. For us that is a difference of $867.72 vs. $1,679.58!! We are concidering ordering groceries to our room and using the microwave in the lounge instead of using the plan. Either plan it's lots of $$. There is also a Hess gas station near downtown disney where you can get food and drinks cheaper. We would eat out a few times I am sure. But as of yet we are still undecided.
Someone on here told me that if you order groceries to order a styrofoam cooler, also that there is a $50 min you must spend. There is also a McDonalds in WDW, my sis said that the prices are inflated there. At least you would get free refills. LOL