Originally Posted by bgalbrecht

Before you can change your address to the country you are visiting, you need to clear your payment method if it's a credit card. Store credit (e.g., from gift cards or refunds) is fine. I presume buying ebooks from Kobo in Italy will be in euros, so if your credit card adds a surcharge for foreign currencies, you'll also have that on your bill. If you're paying with store credit, Kobo will convert your credit to the foreign currency, and then back again when you return to your native country.