I'm bringing cash to pay for our excursions (Trevor Hudlin in Jamaica & Captain Marvin's in the Caymens) but if I want to do shopping are credit cards widely used or should I bring cash? If not should I get travelers checks, etc. I'd rather pay for everything including items on the ship with a credit card so I don't have to deal with cash. Do I need local exchange or will US Dollars be okay. I don't plan on purchasing a lot, but I know I want some Alchol and maybe a few t-shirts or misc. items. Thank you! I have about 15 days to go and I can't wait! (As long as Delta does not strike we are good to go!

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Edit: Moved to Caribbean Port Chat. RF