Edgar Rice Burroughs wrote his series of John Carter novels before space flight was more than a fancy. This movie is more adventure and romance and very little (if any) actual science.
This movie is the best production of A Princess of Mars, the first story in the series, that I've seen.
If you're a fan of the John Carter novels then you will probably get some enjoyment from John Carter. While there are some differences you'll meet some familiar characters and recognize quite a few relevant plot points.
Not a great film, but not a bad one, either.
Dad raised us on what he lovingly called "Pulp Trash Novels" and that carried over to adult life where they are proudly displayed along side academic books. Actually they take the top shelf.
So, walking into this I was scared and unfortunately I had every right to be.
Now I am fine with artistic licenses, I wasn't expecting it to be exactly like any of the books.
But I was expecting it to at least follow the source material a little, something more than just the names. In short, I was expecting a John Carter movie in more than just name only.
And, frankly, this didn't even feel like a movie based on pulp adventure novels, which for me was a key point, it could take all the liberties it wanted so long as it still played out like a pulp adventure novel. Unfortunately, it fell short on this.
And, to make it even worse, it was boring.
If you like the source material, if you like adventure for really the sake of adventure and escapism, then stay away, stay far, far away.