The question of "Is it worth it?" is hugely subjective. For some it is, for others, not so much. The key is identifying if the structure of the plan fits your dining style, and this is not so easy for a first trip.
To determine if it should work out for you, answer the following:
- Do you wish to dine in the manner the plan suggests? For DDP this means 1 TS and 1 CS per night, with Entree, Dessert, and Drink at each meal.
- Will kids be ordering kids' meals and adults be ordering adult meals?
- Will everyone be ordering their own entrees (e.g. not sharing) and desserts?
- Are you desiring to put most of the TS meals in the dinner time slot and CS meals for lunch?
- Are you desiring to limit yourself to single credit meals (at least the overwhelming majority of meals) and to places that accept the DDP?
- Are you OK with having to plan out your restaurant plan around 6 months in advance?
- Are you willing to gear the TS meals to the higher end of the price spectrum, and the entrees ordered from the top half of the menu (in relation to price)?
- Are you OK with taking around 90 minutes per day out of touring in order to travel to, and then eat at a TS for dinner?
If you answered yes to all of the above, it should work fine for you. Once you sit down and figure out your restaurant list, you can run a second analysis on what you think you'd each order, and get a more definitive answer.
If you answered no to a few of the above, then chances are it won't be the best deal and that OOP would be better for your trip. I'd still recommend running the numbers on each place you plan, just so you can see a much more accurate analysis, but that's just me and I like numbers.
Depending on your length of stay, I'd never recommend DxDDP to any first timers staying less than a week. It's just too much time taken out for dining to make it worth it. Once you have a trip or twelve under your belt and know how to best navigate and know what to skip, then it's doable, but for a first trip it's too much time eating to be worthwhile.
One of these days, I'm going to write a flowchart or a quiz type thing that helps to answer this...
Edit:
And the popcorn is because this topic can get heated with people attacking and defending the plans. In reality, they work for some, but not others and identifying that is key to determining if it's worth it for you or not. Most of us here are pretty objective about it for others though, even if we really love the plans or really hate them for ourselves.