Whether it is entirely real or not is certainly something that can be debated. I have watched every season, I enjoy the entertainment value. The need to make those deliveries is real, so based on that I tend to think most of it is real, and then they edit the footage to make the story, capture the drama, etc.
Side note, I was traveling to Alaska for business for a while, and while I was there one year, we went to a minor league hockey game, and Lisa Kelly was there signing autographs. So we got an autograph and a few pics with her. She is smaller in real life than she is on tv.
2015 Rockwood Mini Lite 2504S
2015 Ford F150 Ecoboost