Predictably Unpredictable Visas

The whole visa process is confusing to me and other parents, I assume. At least it was confusing to Connie, who sent me this question via the Parents of Goers website.

As I get these questions, I will share them with you all since we are all in this boat (airplane?) together. I will respond with my personal experiences, but I would love for you all to chime in with yours in the comments so we can all learn from one another. Hang in there Missionary Mamas and Dads!