When I first picked this up I was expecting an enjoyable read. Sadly, this was not to be.
I found the characters to be one dimensional, especially the narrating voice. That almost every person in the book had to have some complicated back story and personality problem felt like a contrivance to make them more interesting, but failed utterly. It was just annoying.
Some of the scenes which are meant to be funny also completely fail. The passages set in Luke's school were particularly excruciatingly difficult to read through. Passages which should have been terribly moving, especially in the hospital in the aftermath of Arthur's accident, were just flat.
The biggest problem though is the plot. I couldn't find it. The book just meanders along, and, I felt, didn't really set up any questions (apart from 'how long is it until the last page?') and therefore didn't have a natural end point, as there was nothing to resolve. It just petered out.
All in all, not a book I would recommend. It gets two stars, as I managed to finish it, and one star reviews are reserved for books that I can't even get to the end of. No marks for characters, plot or engaging storytelling/use of language.