NO! Just returned yesterday. It was HOT. With DS I was more concerned about him overheating, and was taking breaks in Baby Care and the stores so he coudl get some AC. I never felt cold a bit in the AC - even during longer Character meals. It was so hot, you needed the AC break to cool down.
No one in our group ever felt too cool - we were wearing shorts and lightweight shirts the whole time (and DS was in little sunsuits at times because of the heat).