So I can pretty much see right now that we are not likely to get by with just carry-ons for our quickie Dec. trip.
I am a horrible overpacker anyway, so the chances of us doing carry-on only were already pretty slim. We've been in January and I didn't wear shorts at all. One of those days was COLD and misty - we wore polar fleece pullovers, gloves,and hats. World Showcase in the mist is very unpleasant, as is AK in the pouring rain. Plan accordingly!