My advice to you is simple. NEVER use a credit card to buy foreign currency because you'll be charged fees and a very high rate of interest from the moment you make the transaction. It makes no difference if the card offers 0% on balance transfers and purchases because foreign currency is treated as a cash advance. The best use of a credit card abroad is to make purchases NOT cash withdrawals. Use the Post Office or Nationwide credit card because they don't charge a foreign currency fee which is normally 2.75%