There are differing opinions as to whether or not we should be worried about visiting Colombia. In fact, it could be said for Nicaragua and Guatamala. Even Mexico mentioned that as tourists, we might be apprehensive about visiting their countries. It seems to boil down to the Pan American Hwy which goes through all of these countries, and the likely possibility that drug smuggling would be going on through this corridor and the consequences of interfering with this economy.
I did take a copy of my passport as well as my driver's license and some cash and a credit card. Normally we only bring a small amount of cash and our room key to get on and off the ship.