Always change money at a bank (or, for American Express card-holders, at an Amex office) for the best rates and lowest commission charges. Bring your passport as ID. Exchange booths (cambio) are good at a pinch, but have worse rates and/or higher commission. Never exchange a travellers’ cheque (or use one to pay) at a shop or hotel unless you have to; the rates are awful.
Automated Teller Machines
The fastest, easiest and cheapest way to get local currency is via an ATM (bancomat), drawing money directly from your home account. No ID checks, no queues, and you get a better rate than inside ...