I'm not a member of the W.I.S.H. boards, however I do peek in on them now and then. I had been low carb/somersizing for about 8 weeks before our trip and was only a few lbs off of goal. It was about 90 degrees, hot, humid, and I came thisclose to passing out in Sea World. Anyone who's dieting in WDW just be extra careful because the 5 + miles of walking a day along with the heat and dehydration (and no sugar) did me in. I upped my carbo intake by about 40-60 grams a day. The extra carbos and sugar were just burned off during the day and I didn't get lightheaded anymore. It's easy to stay low carb in "The world" however for myself it worked out better adding some breads and multi grain carbs to each meal.