What is the currency for each of these places?

I think your ship's purser should be able to provide you a currency exchange before you disembark at each city or visit a bank when you hit land. But, in most cases, you can just use your visa/mc and they will automatically perform the transaction in the proper currency at the best possible rate. But check out the currencies before you go so that you don't think you're spending 5 bucks for a sombrero when you are actually paying 15.