I've created a track of our cruise that I collected during using my GPS unit. If you have Google Earth, click on the link to see our path of travel. You can download Google Earth for free.
Antigua and Isla de Margarita especially show some detail of where we walked about... for the other ports, we just took readings at port or at sea, and connected the tracks between ports.
Using the same data I've geocoded our photos (provided latitude and longitude locations) so that they can be referenced on a map if need be. I'm still working on the photos (cropping, fixing, providing captions and whatnot) but I expect to make them available soon.