You know, Heidi had a great recommendation for me on my last trip, and even if you don't do it exactly like this, it can still be helpful.
She recommended having a list of my top three things per day. For example, if I knew I was going to Epcot, my three things were to ride on one ride alone with my Dad, make sure Nemo got on the Donald ride in Mexico, and have champagne in France with Mom and Nana. Now, that's not my actual list, but just off the top of my head to give you an idea.
My lists are less specific than others would be, but you could get as specific as you want. If you know your DD is dying to meet the Princesses, that could be number one on your list for a MK day. Savvy?