Although I understand the UG reasoning of doing MK last with kids, they also have a touring plans website that will give you a crowd prediction and will suggest more specifically which park to do and on which day depending on the specific dates you are going. I love MK and would love to do that first every time we go, but if that is an EMH day, we avoid it. We plan our parks based on their suggestions for the best and worst parks to go to on each day we are visiting.