>>> "i bring in cash to aruba...."
--- How many days are you staying and are you going AI? You will need US$$ for casinos, tips, cab fares, bus fares, small items, ..... Master Charge and Visa Charge accepted at most shops, restaurants, tours, ....... American Express Travel Checks can be cashed at most resort front desk for guests and casinos will cash them for players. So if you plan to bring all of the above items will say bring $50 times number of days in US$$ and use Travel Checks and Charge Cards as needed. But there is Petty Crime in Aruba so keep most of that stuff locked in your room safe. Do not lock that stuff in your car, or keep in your beach beach, ...... Most resorts let you charge food/drinks to your room. Do that.