According to easyWDW there is a private U.S. Travel IPW event. He has it listed as the most recommended park that day b/c of this. Apparently, most people will avoid it that day b/c of the early closing.
Thanks so much, I never think to check that website. Our DD's are arriving that day, so we won't plan on having them visit MK that day since they won't be able to be at the park in the morning.