Clothing wise, I would suggest watching the weather leading up to your trip to decided what to pack. I cruised the first week of December 2014, but we stayed in Orlando for 3 days before the cruise. My cousin had been in Orlando two weeks before we left and they had to wear pants and jackets most of their trip or at least in the evenings. For this reason, we were watching the weather closely for the lead up to our trip.
During the three days in Orlando, our weather was mostly high 70s. The only time it was chilly was when the sun was not up, so in the early morning and evening hours we needed jackets. Our cruise was what we would expect for Florida/Bahamas and we were fine in short sleeves, shorts and dresses/skirts the entire cruise. We all did make sure to take at least 1 pair of long pants and a jacket or sweatshirt just in case.