I finished this book almost a month ago, and read it mostly on audio, so very little of it stuck.  

I am forever annoyed by epistolary stories that don't read like letters/recountings/etc. You know the ones that are like "This is a letter or a journal entry" and then just proceed to tell the story like a usual narrative, with a little flavour text at the beginning or ends of chapters?  This is why this book lost a full star.  

Other than that one thing though, I very much enjoyed this story.  I loved the characters, I loved their relationships, I'm enjoying the world building even if I'm sure I'm missing a lot in audio form. 

Overall, I'm very excited to continue this story.