This movie has a bunch of little things that may not be ok with kids. For example, some movies have extreme violence, others have extreme drinking, this doesn't have an extreme anything, it just dabs into every category.
Now, an early warning, if you get motion sickness easily, this is not a movie for you. The shaky camera even bothered me a little, and I almost never get motion sick. Also, this movie has a very, VERY open ending. Us fans of Lost are used to this, but if you don't like open endings, this is not a movie for you.
The monster did not disappoint. I gotta admit, that was one pretty cool looking monster, not some dumb lizard thing. Also, the action did not disappoint. Almost constant action, not boring in the least.
Basically, an overall great movie.