This year
free dining requires paying rack rate for the room, staying at least four nights, buying
two day park tickets for everyone in the room, and also requires you to buy a $99.00 photo memory book. If more than two adults share the room, you'll have to pay an extra adult fee for each adult over two. At a value resort it'd be $10.00/night, at a moderate it is $15.00/night, and at a deluxe it'd be $25.00/night for each adult after two.
Also don't forget you get the
DDP for each night of your stay (not day), so if you stayed only one night and paid for the DDP you'd only get one TS, one CS, and one snack if you bought the basic DDP and three meals, two snacks, and a mug if you paid for the DxDDP. Unless you have an AP or are staying on DVC points, you'd have to also buy at least one day park tickets for everyone in the room.