Will my kids need jackets?

[NvrBnToWDW]

We're going May 7-14 and I was wondering if it gets chilly at night. We were all planning on wearing shorts and Ts, but will we need pants or jackets at night?

 

[Schmeck]

Been in May twice - we did end up wearing sweatshirts int he morning and evening a few times, and just tied them about our waists during the day. We never wore the pants I packed though!