I think this really depends on what kind of fishing you are going to do. If you are using a simple spinning or casting set up it is not a big deal. You can bring your own or buy it at Captain Sharks. It is more expensive than in the US and the selection is limited. If this is the kind of equipment you are going to use then either bring it (get multiple piece rod so it won't be a problem on the flight down) or buy it and when you finished give it to a local guide or kid.
If you are going with a guide, I think, most of them will supply all the equipment for you. I am not a fly fisherman but I understand there is a very particular relationship between the angler and his equipment and you will know what to do.
In any event please do come down and have some fun and leave something for the guide or some of the children.