We are going next week as well, and none of the weather forecasts that I've looked at have indicated all day rain (except for maybe Friday). Everything says occasional thunderstorms and sun. We're just bringing extra shoes.
We are going next week as well and like you, all the weather forecasts I've seen have been for chances of thunderstorms but not all day rain and from what I've read on different posts, this is normal for Fla in the summer. I'm just taking each of us extra shoes as well.