Completely agree! Not just during WDW marathon weekend but throughout the entire training process. DH spends every Saturday morning with our little one so I can run. I actually kind of disagree with the idea to walk everything except the marathon in your approach to the Dopey. You also want to consider/calculate time on feet and out in the weather (sun, rain, snow). During both of my Goofy Challenges, I just took both runs at an easy pace about 1 minute/mile longer during the first half of the race. We will each have different approaches to the weekend. I think the most important thing is to train the way you plan to run and have an arsenal of mantras ready. Keep swimming!