Actually, it's all about a chance. When we were on our anniversary trip July 30th, we asked about this at Town Hall inMK. We were told a different Manager is chosen each day to pick Grand Marshall's etc. And it is just a "chance" thing. I have been told by some CM friends that they love to see families all dressed in matching shirts with "ears" on, things like that. And it is advised that you get to the gate early.
Well, we did all that on our anniversary, we were early, had our wedding ears on, matching shirts, matching Bride & Groom lanyards. Still went unnoticed, and unpicked. It is simply a chance encounter with a manager.
It's a bummer I know. We'd love to do it sometime. As a matter of fact, we even tried when DH first got home from Dessert Storm. We went and asked, told of how he had just returned the day before from Dessert Storm, they were so sorry, but it was a hit or miss thing. SO special occassions, makes no difference either.
Blessings,
Winnie
PS: DH has been Veteran of the Day twice. Which is totally awesome. You CAN request this when in MK. But I do advise getting to Town Hall early and seeing if they have someone during your stay. If they don't you can tell them you'd like to do it. and Choose a day that is open that you will be there. It is an awesome experience.