@mom2rtk apparently is able to make this work for her family. For us the cold, hard reality is we rarely can make this work. We live in the Mountain Time zone and almost always we visit during high season when EMH is at 7AM. Trying to get the whole crew up and out the door by 6:30AM is just really hard to do. So on a four day trip we are lucky to use EMH twice. That is only once more than if we stayed offsite and used our MM at DL one of the those days.
If we visited when the parks opened at 9 or 10AM I think we could make more EMH's.
Bottom line is how much the average person can use EMH depends a lot on your group/family and when you visit (what time EMH happens).