I liked how open they were. They work among their best friends, their family. This situation can be extremely profitable, monetary and enjoyability. However, where there is happiness in success, you should expect some not-so-happy times. You see them on the videos and think they are always having fun, but sometimes they irritate each other and have to deal with these family quarrels.
Their unashamed approach to displaying difficulties and their Christian faith in the documentary was well done, bold, and transparent, which is another reason they have been so successful.
I hope they can continue, for my kids highly enjoy watching them, but I wonder how long they will be able to do it.