This film wasn't terrible, but I'm not sure it is worth $8.50 to see in the theaters. It definitely has the feel of the previous movies, but some of the plot was very difficult to follow. On top of this some of the acting by Depp felt a little half-hearted. It appears they might be setting this up for yet another sequel. Which may be what was wrong with this one. Third movie brought a ton of closure. So this one felt like a spin-off more than a sequel. It felt like it was getting a bit too old. If they film another, they're just beating a dead horse, to use an analogy.
All in all it was a fun ride despite some disjointedness in the plot. See it, just not for full price.
This is a solid PG-13 for violence having to do with lots of sharp, steel blades, disturbing imagery, and some sexual innuendo (Very subtle)