As we are considering moving our dates, I have been trying to make plans on which parks to visit on which days. I had originally planned on MK being our first and last day park- but with the new dates looks like a party on our first day, which doesn't interest us. So is MK a must-do for you on day 1? Worth the shorter park hours? Our last trip we actually hit Epcot first- but it really "felt" like Disney that second day when the castle came into view!