sstan457:
What happens if it rains the day the cruise leaves and or storms? Will they cancel the cruise on us and does anyone have access to a 15 day weather forecast for grand turk because I see it's supposed to rain for 8-9 days straight there!! 
It rained on my cruise this past summer.
On embarkation, only the stern pool was open, and that was because it had a (closed) roof. The other pools, and the slide, were closed. Yea, those of us who wanted to wave goodbye and watch the sites as we left, got wet.
On our first day at sea, there were plenty of unused chairs out on the open (and wet) Lido deck.
On port days, and because the dining rooms were closed, the Lido deck was packed at lunch time. Those daring enough to leave the ship, were welcomed back with a towel (there was a Carnival employee just after the x-ray machine handing out towels). I thought that was a nice touch.
It stopped raining on debarkation day.
I still had a wonderful time.