Don't let the rating fool you, this movie is lots of fun. It's a much-needed return to 90's thrill ride action movies and blends Die Hard with a disaster movie to the expected result. That said, it has its flaws, of course. The kids do a mediocre acting job at best, and there are plenty of confusing motivations and convoluted plans staring simpler ones in the face. But you could do a whole lot worse, and the CGI around the prosthetic leg combined with Dwayne 'The Rock' Johnson's portrayal of the character with an injury is some of the best I've ever seen. Great action setp-pieces and pasted-on everything else make for a fun time at the movies.