When this movie first arrived in trailers, I like so many adults, who have become fans through our children was excited. We could overlook Pierce Brosnan playing Chiron which gets both the age and nature of the character wrong. We could overlook the character of Percy obviously being older than the books stated age of twelve, however almost everything else was so far removed from the books that have become so popular including storyline, that this movie should not even be allowed to carry the "based on the books" tag. The characters were completely miscast, the storyline was a weak abominational blend of books one and two..... kind of..!
He (Chris Columbus) invented places for the movie to go that have nothing to do with the story in its origination, he omitted too many details that are so pertinent to the actual storyline that it may be impossible for any new director (and I believe if future films are to take place a new Director IS NECESSARY) to repair the damage that has been done.
For a story that has millions of fans who will be buying tickets to movies for a very long time, this does heavy damage to Chris Columbus's reputation as evidenced by post movie chatter in which most if not all was incredibly negative. Negative both to the movie as a whole and to Chris Columbus personally. Many there seem to believe he did the same to the Potter movies he has been involved with and feel at this point anyway that they will think twice before seeing another movie with his name attached to it. Lets' face it, as one young fan said, "not sticking completely to a Potter book...understandable, they are 1,000 pages each...Not coming close on a book 350 pages long...not forgivable."
So, if you are going to see this movie because of the wonderful scenes in St. Louis, Denver, The Santa Monica pier, or to see his step father get his, etc etc etc etc save your money, they are not in there. Neither is Clarissa, Lukes scar, Mr. D, Aries, Kronos, and so on. If you would like to see a movie that completely rewrites the creation of Rick Riordan, then by all means, spend your money on a mildly entertaining theft of a wonderful idea.