Hi
I will never ever going again at May half term, we flew out the 29 May for 2 weeks. As already posted the weather was dreadful. The parks were very, very busy. I found out from chatting to someone in the parks, that the kids in florida, Georgia and Louisiannea were on holiday. There were loads of school trips in the parks as well.
I have friends who always go the last week of April first week of May and they say the parks are empty and the weather is lovely.
However, I see you have a child of school age and may not want to take her out of school.
Have you thought about the end of October. The weather is usually nice then. I think the hurricans this year are the exception rather than the rule. Although it is still hurrican season until the end of Nov.
We went one year the first week in Nov. The first evening was really cool and I needed my coat, after that, it was really warm. I got a great tan, for better than this years. I think it was rust from all the rain!!!
I'm sure whatever you decide, you'll have a great time. The weather won't spoil it. It's just more fun in the sun. Although at times it is so hot, you'll pray for rain.
have fun planning