Some recommendations from one who has "been there", and who managed to come home from a week at WDW weighing less than when she got there:
* Start your day with a WW-style breakfast: sensible cereal with skim milk and fruit, low-fat yogurt are good choices. (Resort restaurant breakfasts can be really tricky, with all that sausage, bacon, biscuits, and cheesy stuff! It's easy to use a whole day's worth of points at a breakfast buffet, so I avoid them.)
* Plan one "larger" and one "smaller" meal each day- if you're planning a Mama Melrose dinner, plan a very light lunch, for example.
* When you're hungry for a snack in the parks, seek out the fruit stands instead of the Mickey bars. Take some portable high-energy snacks with you in your pack: dried fruits, granola bars, nuts.
* You can find menus for the restaurants you're planning to visit at Deb Wills' site:
www.wdwig.com. Study the menus and identify the more on-plan choices ahead of time. Try to avoid creamy sauces, cheesy dishes, high-fat dressings. Save those points for dessert (see below!)
* Desserts- you're on vacation! Live a little! If a dessert is really calling your name (I'm a chocoholic... life's just not as much fun without some sinful chocolate desserts now and then.

) I would go for it! Again- you can exercise some portion control here. Share a dessert, or just eat half. If you can't control yourself and just have to clean the plate, SAVOR EVERY BITE! You're going to walk off lots of calories at the parks. (I would try not to do this every day...)
* You can afford to splurge a bit on some meals... enjoy those unusual and unique offerings, but remember that you do not need to eat a *huge* portion to enjoy your meal! Leave some on your plate, or share...
* Burgers and fries are among the WORST on-the-go meal choices. Most of the quick-meal places have at least one lower-fat option, and you can often get a fruit or a salad instead of fries.
* You will do TONS of walking!
* Drink LOTS of water! You can buy bottled water all over the place in the parks.
(I really love Marrakesh- I think it's one of the most unique WDW restaurants!)
I did not try to actually count points when I was at WDW. I would have made myself crazy doing that... I just tried to make good choices based on what I had learned. I considered it practice for when I'm on maintenance.