I'm facing the same packing question as we will be in Disney Jan 24-28 ... it's much easier to pack for an August vacation ... you know it's going to be HOT, lol!
So I'm thinking layers ... will bring our swimsuits as I'm sure the grandkids will want to swim (and will pack their bulky terry bathrobes for the trip to and from the pool).
My grandson has several pairs of zip-off pants, so I figure I'll bring the pants with long and short sleeved tees, a lightweight jacket and a polar fleece pullover.
For my grandaughter I'll bring long and short sleeved tees, knit pants, capris, maybe a couple of pairs of shorts (hopefully I'll be able to mix & match), a lightweight jacket and a polar fleece pullover.
I tend to wear short sleeve tees with a lightweight demin shirt tossed over them all winter with jeans ... so that's what I'm packing for myself, along with, you guessed it ... a lightweight jacket.
Oh, and I'll be bringing our Mickey ponchos in case of rain.
We spent Christmas week in Disney back in 1992 and in all the photos we are wearing jeans, tees and lightweight jackets.