Beware of Ameican affiliated credit cards.
In Cuba or cayo coco they don't accept credit cards
affiliated to America, so check with your credit card company before you go.
I met a few people who got stuck as they had no extra money.
Unique Suggestions: Make sure to check before you go with your credit card company.
Fun Alternatives: Take other cards, as it works out cheaper to spend on your card then to pay by cash.