One of the problems I had about the dining plan was that 3 of the 4 restaurants CLOSED at 5pm. This was not mentioned to us when we bought it, and the park was open until I think it was 8 or 9pm.......so we went to a late show and then planned to eat only to find everything but the marketplace closed. To ME, 5pm is dinner, so to have everything suddenly closed was quite annoying (the restaurants and kiosk NOT on the dining plan were still open though...go figure). I went and complained because we'd only used the dining plan for lunch so far (at the marketplace so we really didn't want to be forced to eat dinner there also!) and ended up going up to a supervisor and got a refund. I offered to pay for the meal we had actually eaten, but they declined.
Another thing to keep in mind....if you just want a drink or a dessert/snack, you have to stand in the same line as those wanting a full meal. Your dining plan is NOT valid at the drink/snack kiosks scattered around the park that have shorter lines because they only do drinks/snacks. So...if you are there at a busy time you could end up having to wait in line 20+ minutes just to get your drink. The dining plan allows you to get one entree, one drink and EITHER a side OR a dessert (not both)....so if you want a side to go with your entree and then a dessert, you have to go stand in line AGAIN to get your dessert.
As for prices....generally similiar to DL....so figure easily $12-15 for an adult meal with drink...more for their nicer meals. So basically if you do two full meals and desserts it's about break even. Since it costs $33 per person, if you are there all day, breakfast, lunch, dinner and throw in a few drinks/snacks it will likely be a value. If you would usually only eat lunch/dinner it may be a wash. Of course, you have to decide if that is how you would normally eat or if you're spending a lot of time in line and eating just to be sure you get your money's worth, lol.
We're going again in November and won't be doing the dining plan. We are staying at a Holiday Inn Express which has a hot breakfast, we'll pay out of pocket for lunch and the park closes at dinner time, so we'll just hold out and leave when they close and have dinner offsite. We will probably also have a few snacks in the fridge in our car....since we have the silver passport and we arrive at opening we have always been very very close to the entrance.