We always start and end our WDW trips in MK...it's just the essence of all things Disney for our family.
During our last night at MK, we try to hit the snacks we might have missed out on, any attractions we might want to experience one last time, and grab any last minute souvenirs. Once we've done those things and are feeling like we need to leave the park soon, we ride the People Mover one last time. This is important because we always film our trip summary on the People Mover. It's a slow long ride and it gives us plenty of time to highlight the weather during our trip, our favorite meals, how we felt about our resort, the attractions that we loved the most, anything especially funny that happened, any CMs that were extra awesome during our stay, and we always talk about any pixie dust we experienced on our trip. It's the BEST film footage to watch when we get home, because it gives us all the high points of each of our trips in one little capsule.