I posted a picture of a family opening MK back in Dec '08. I do not think anyone claimed to be the family. I will taking pictures on my next trip. It is fun that we are all just as excited as the families that are picked.
I love this idea. I've got a a few pictures of my family when we were Family of the Day at MK in 2006. And I've got pictures of whoever the family was on July 5th. 2009 and I think July 9th, 2009. I'll have to wait until I get home though