It was discussed with the same Subject line, "colones vs dollars" 11 days ago
https://costaricaticas.com/phpBB2/vi ... highlight=
You must have colones . On one of my first trips I went to 4 or 5 stores in San Jose trying to buy a bottle of water with a us 10 dollar bill. They all looked at me like I was trying to hand them Monopoly money. Most resturants will accept US dollars but it complicates the payment process. All the locals use colones. Another reason not to use dollars is that it shows you are fresh off the boat (ok, Plane) and makes you a target for overcharging , etc. The exchange rate is about 517 to a dollar right now so one hundred dollars is 51,793 colones. I get my colons from an atm machine in front of a bank. That way if the machine keeps my card , I can go inside the bank and ask for it back. Many machines only let you get 100,000 colones at at time. I like the BCR "Bank of Costa Rica" machines because they let you get out 300,000 (approx 600 dollars) colones at at time. Since there are atm fees with each transaction, I try to limit the number of transactions by using an machine that gives me the most cash per transaction.
It is very important to use the machines in the early part of the day. Using outside machines in the evening is dangerous just as it would be in some areas of big cities in the USA. I used to exchange a lot of money at the casino cashier at the Del Rey. You give them a hundred dollar bill and they give you about 51,000 colones or a little less depending on what exchange rate they are deciding to use that day. So for a hundred dollar bill , you will get 5 10,000 colone bills and some change . Each 10,000 colone bill is like 20 dollars. Whenever I go to a new country, I keep a little cheat sheet in my wallet . One dollar equals a 500 colone coin. A 1000 colones note is about 2 dollars. A 5000 colone note is 10 dollars. etc. If your ever in doubt , most places accept visa and even amex I have found. I have used my amex many , many times in two years without any problem. Although I think amex has a percent they charge for each transaction.