I'm a FL Resident and have had the DDE card for 3 years now, and I can say it's worth every penny! Yes, technically, you'll need to spend $250 on meals to make it break even, but I've done that with at least 5 meals! It's good for 20% off the entire bill, alcohol included if that's your taste, and pretty much what you get discounted becomes your tip.
Also, if you plan on making more then one trip in that year's time, you can watch the savings roll in.
Have a great trip!