Hey Blind Prophet, I think the violence quota can be met -- PG-13 is more risque these days than in the days of Bill Paxton's incessant "Game over, man, game over!" whining.
I saw it with a group of approximately 20 guys as a preamble to a friend's wedding in Kentucky. Boy, were we annoying to be in the theatre with. It was pretty hokey, but a fun flick to see. Some neat, if implausible, background story to bring the two movie worlds together. Good CGI and special effects. Highly silly storyline, but at least the humans get made into meatsickles pretty quickly, as one would assume would be the case.
And, Bishop's in it.
And, it's set in 2004.