2019 REREAD : Yeah this book is far from a literary masterpiece, but rereading it without any pressure of wanting it to be good or having to review it has made it more fun and enjoyable.
(still not enough to give it more than 3 stars)
ALSO! I finished this book on exactly the same day 3 years ago and have only now noticed it. MAGIC!

2016 REVIEW : I'd heard so many great things about Carry On, I was expecting a masterpiece ... but it wasn't. What it is a fanfiction-turned-novel with maybe one or two characters you get attached to.
The biggest problem I had was that I kept linking every aspect of this story to Harry Potter, and that was distracting me of the story I was actually reading. That story was interesting, mostly because of Baz in my opinion, but we can see that it wasn't simply created as fan service.
We can see that it is originally just fanfiction, and for me the relationship(s) didn't evolve in a deeply-thought way, it was a little abrupt and difficult to take seriously.
I must admit that Carry On was still an entertaining read.