The idea is that the pictures kind of contradict the narrative, which is really pretty silly, but helpful to know beforehand, because at first I was a bit confused.
And while I believe the audio book includes a PDF of the pictures, those are pretty hard to look at while you are driving, or gardening, or cleaning out your dungeon. But I fell so much in love with the voices on the audio book that I finally ended up listening to the audio while simultaneously reading the physical book whilst lounging in bed. I had to stop cleaning out the dungeon to do it, but it was worth it.