For large sums, credit cards provide the best payment method. In many countries, the card will never leave your sight, even in restaurants. Even better, pay for higher priced arrangements, including hotel, rental car, rail, sightseeing and activities in advance so you have the peace of mind knowing that much of your trip is paid before you depart. For small purchases, check to see if there is a difference in price or surcharge when using a credit card. Remember, not all shops, restaurant, taxis, etc. will accept a credit card so always have currency on hand.