Hi there!
I don't mind your questions at all!
Yes, our meals at WDW are waaaay more food, and more rich/indulgent food, than we normally eat. But we don't work out per se on the trip -- we've not used the health clubs nor gone out to run. Here's how we manage:
We wear pedometers while we're there, so we know we walk 10+ miles most days (I think our high is about 15 miles, and a low day would be 7 -- but only one day in the week would be a high and a low). We're always really carefully, esp. after dinners, to walk for a while. Also, a lot of those miles are at a pretty brisk pace -- sure, we do stroll at times and the pedometer is counting that slow process of getting through an attraction line, but we also pump up the speed intentionally at times.
Next, we aren't big on the "clean plate club" thing. We think about what parts of the meal we love so much that we REALLY want to finish, and just have some of other parts. So, we do try to finish salads, we sample but don't over-do bread, think about how to manage the main dish plate, and rarely finish a dessert (unless we "saved up" for it during the rest of the meal!).
We end up using snack credits during the trip almost exclusively on water (we do hit the resort shop to bring back snacks to put in DS' lunchbox to use up extra credits).
And that's really it. Hope this helps! Congratulations on your great accomplishment and best to you in staying healthy and fit!