Plan for anything and everything! We normally go in the winter months to warm up (we are from NY)! But that wasn't the case in Jan (2010)! We were there the first week of January and it was FREEZING! I don't think that is the norm though! We know, and expect the planes to de-ice GOING to WDW, but when they have to De-ice them in orlando, going back to NY, you know its cold there! We are heading back this coming December, hoping for slightly warmer temps this time!! Have a great trip!