Wife and I went to see it with my grown kids. The kids and I all read the book, which was very good. As you would expect there were things different than the book, a lot of pop culture references to things more in the 90's and 2000's than the 80's like the book....okay... making it more fitted to millennials, I get it. The movie was done very much in the style of Guardians of the Galaxy...sci-fi/coomedy with a ton of one-liners and flash humor. The book had some humor thrown in here and there, but the movie was more humor than sci-fi. Which was disappointing. Overall, if you liked Guardians of the Galaxy you will like this film. It was pretty funny and the action was pretty well done. But it was changed too much from the book IMO, which is too bad. It was a very good book. 3.5 Stars - worth seeing. But maybe wait till it is streaming.