Being able to go at either time would be great but if I had to choose I would say February. We went in May once and it was unbearably hot. I've also gone in January when there were no lines and the weather was perfect.
Mom and I have been reading all the responses and we have decided on May. She likes it warm and she enjoys the spas and pools so May it is. I would rather go in Feb because I don't like being hot but I was outvoted lol. May sounds good to us and we have been to Disney twice in May so May it is!!
Joanie