a satisfying adaptation - sticks pretty close to the narrative established in the novel, but because the earlier section is much condensed, it seems that an opportunity for character development has been lost. we're left instead to define tommy, ruth, and kathy based on their experiences at the cottages, long after their dynamic has been well-cemented in the book. the movie becomes, then, almost narrative for narrative's sake with protagonists that feel more than a little flat.
I'm okay with it, though, because it's an otherwise perfectly fine, nice movie.
(I also just read The Children of Men - talk about an adaptation!)