Go to the Disney site and do a search for "Magic your way plus dining". It is 37.99 per adult, $10 per child over 3. Per day of your stay you get (per person): 1 counter service meal (appetizer, entree, drink & dessert), 1 sit-down meal (appetizer, entree, drink, dessert), 1 snack. All gratuities are included. Snacks consist of chips, fruit, a drink, popcorn, ice cream, etc. in either the parks or the hotels (though not every location participates in the snack thing).
We spent around $500 for it last year and managed to save over $1100 in receipts!
It also gives you the chance to try thing$ you may not have tried if you were paying full price.