asuuming you have a fridge or one of those coolers that plug into the wall
Take lots of snacks like turkey pepperoni, cheese sticks, Celerey, laughing cow, peanut butter, cut up veggies prebagged, boil a bunch of eggs, take some turkey with lettuce, sf jello. Eat your snacks and maybe some of the veggies and such before you ever attempt any food in the parks. You can take your own food into the parks.
If you plan on eating in the park go to
http://allears.net/din/dining.htm
You can look at menus and such at that site and get an idea. Plan your meals and KNOW what you will eat before you get there. You can carry water into the park. I would carry my own and skip buying in the park. It does get pricey to buy sodas and water in the park. They do have lots of places with fruit/cheese type snacks but again these are pricey.
We went to Disney in the fall before I started this way of eating. I ate what I wanted that week and still lost 7 pounds just from walking around. I wore a pedometer and after three days it DIED!!!
Tammie