I know this is really late, but I did want to share what I learned from the challenge.
Doing the marriage challenge allowed me to bring up some serious topics in a light-hearted way and receive some really important information from my husband. It was easy to ask where he saw our family in 10 years with the buffer that I needed to know for a blog I was writing. Sometimes, I have a hard time bringing those topics just out of the blue because he wants to know why I'm thinking about that stuff.
I learned that I really need to help my husband out in being mindful of what I spend and trying to get rid of our debt because that is a goal that he is working towards for our family.
Also, I learned that there are some meals that I cooked before we had a child that he would really like to have again. So, I am in the process of putting those in the rotation of what we eat. :)
The final part of the challenge was relating to behind the bedroom doors stuff and I learned that (again) some of the things I used to do (before our daughter) are things that my husband would like to see again. It might be a little more difficult to make time for those things with a child in the house, but I think it also makes it more meaningful.
My goal is to keep up with the things I learned from the challenge and remember to keep my husband a top priority, right after Our Heavenly Father and remember to ask him about these things often because I just might learn something. :)