I just back from a week at Walt Disney World and it was tough to fine good healthy food. I haven't weighed in yet but it looks like I might have lost a pound (my goal was to remain the same). What definitely helped was that I was walking 4-5 hours a day. Like others have mentioned I carried water and LF snacks with me. You have to be careful but you can find healthier food if you look. Peco Bill in Frontier Land at the Magic Kingdom has a great salad and also a chicken wrap. At the ABC Commissary in MGM there was a good hummus wrap.

On a hot day you might want to try the Frozen Strawberry bars, there were really good and only 1.5 pts.

Have fun