Check with your credit card company to see if they have a fee for a foreign transaction in US dollars. Since most places in Aruba charge you in US dollars, there never used to be any extra charges to use the credit card. However, last year, many companies started to charge extra fees (generally 1% to 3%) for any foreign transaction. I checked with all of my credit card companies, and about half of them did charge, but the other half did not. I always use credit cards in Aruba and have never had any problems in over 30 years of doing this.