1. Drink Drink Drink..we will be loosing hydration faster than usual, due to the change in climate and temp and even if we are drinking the amount that we normally do, we need to drink more (and they said to stay away from sports drinks, iced t and soda). My doc suggested that I bring water bottles with me and a jug of Pedialyte, she said to drink a mixture of that every day (1/2 water, 1/2 Pedialyte) to replenish lost electrolytes. I was unaware that dehydration can bring on labor.
2. Rest during the hottest point of the day, take the afternoon off and rest, swim, relax.
3. (This I thought was a given but she was adamant) She said to go to the bathroom often (like that is a problem) but she said that holding it in can be bad for your bladder and baby.
4. She also said to elevate your feet at night so that you can avoid swelling.
The previous poster had some great ideas about the fans and bandana's, it can get really hot at WDW, we went in August when Katrina hit and it was so hot by 9am, we were drenched in sweat.