I agree with the other girls, the FL weather is totally unpredictable. For the week leading up to my wedding there was only a 10-20% chance of rain...then only a couple days before my wedding it shot up to 70-80%
It was clear on the morning of our wedding day, then STORMED in the middle of our ceremony. But it actually gave us amazing pictures because it was darker outside, which made the WP lights really illuminate in our photos!! It slowed down to a light drizzle by the time we were outside for the petal toss. I'm actually glad we got some rain just because we were able to get some cool umbrella shots that I had wanted anyway, rain or not! But the rain makes more sense
Because it was still drizzling, our cake cutting got moved into Whitehall Patio instead of Commander's terrace, and during our bride/groom photo time we spent a majority of it inside the WP and the Grand Floridian. I actually LOVE our GF shots the most...so you never know what kind of golden photo opportunities may come with rain!

Thankfully FL showers don't last all day, so by the time we were almost done with our picture time, we were able to get a couple photos outside with the pretty blue sky
Here's a couple example photos and there's more in my PJ/TR. HTH!