Before leaving make sure to have transferred enough money to your Revolut account. Then, you should plan enough time for your card to be dispatched, if you wish to have a physical one. When paying at an ATM or POS terminal, you should always choose to do so “without conversion”. In this way, you will avoid being charged with the ATM provider exchange rate, and you will rather pay the interbank rate. In addition, you should opt to be charged in the currency of the country you are in.