I rented this dvd, because I saw the trailer for the second movie and was curious.
I was mildly entertained. It is Disney's attempt at an Indiana Jones adventure., which falls short.
There are a lot of moments when the characters just act plain stupid and the plot is totally implausible, which isn't so bad for a fantasy adventure, but this is supposed to be more realistic, I guess. You have to be willing to suspend disbelief.
Kids who are interested in treasure maps, codes and ciphers will like this movie, unless they know more about these things than the film makers, then they will think it's stupid.
It is not graphically violent, compared to most recent movies. Little or no bad language, no blatent sex. I won't mind letting my kids watch it, though many adults will be bored, if they are expecting a typical adventure movie.