We just got back late last night from WDW and had a great time. Don't worry too much about the weather. They had thunderstorms predicted every day for us too. Out of 6/13-6/17 we had showers for a couple of hours on Sunday at DHS, a few sprinkles Monday at MK and a few yesterday. Monday and yesterday it was very light rain and was over as quick as it started. I'd carry a poncho or umbrella just in case, and put a poncho over any stroller you might have when you go inside attractions.