Loved it! I've worked in mechanical design for 20+ years so I'm a sucker for machines and tecnology. Even if the story isnt great I like the cgi and the technology shown. As far as the story being a take off from the King Arthur story, it is really a great source for story telling. Jason Momoa is perfect as Aquaman and Nicole Kidman is never a bad character or in a part she doesn't do well.
The ending of the recent Avengers movie where a bunch of good guys are obliterated was a bit on the downer side. But with the understanding of the sequel coming along...I like endings where the good guys and virtue win even if the hero is of the anti-hero persuasion.