no, i don't think the DDP is really worth the money--only if you're going during
free dining time
sure, if you add up the price of the food you're getting and compare that to the dining plan, then you may seem to be getting good value. But how many times would order dessert for lunch and dinner every single day in addition to a daily snack (which seems to usually be ice cream or something else sweet?) THREE sweets a day? Plus, we usually like to drink water with at least one or two meals a day and wouldn't always be ordering sodas. (you get an awful lot of sugar on the dining plan!)
plus we simply wouldn't eat at TS as often if it weren't for the DDP. we'd just do more CS.
so if you always eat that many desserts and sweets and you never drink plain old water with your meals and you always do at least one TS a day, regardless of whether or not you have the DDP, then yes, you would be saving money. I think most people just end up changing what they typically eat though to justify the cost of the DDP in the first place.