I’ll chime in on the weather as well for MLK week. Both times I’ve been that week (2020 and 2023) it’s been the week that has seen the drop into the 30s as the low. I usually pack layers. Typically if there is a cold snap it’s not for the whole week, it’s a bit like last week was where it will gradually drop over 2-4 days to the low point and then quickly heat back up again. I won’t pack for this year for that week until a day or two before I leave because the weather can be all over the place. I was also at WDW last week and I didn’t pack until the day before I left which I’m glad for because it meant I was able to pack cloths for the 40 degree weather and the 80 degree weather.