There is always a solution to any problem. I usually don't carry cash because, let's face it, the coins are heavy. I might have a few bills here and there but so many places accept credit cards nowadays, having an assortment of visa and master card, debit and credit plus the option to book fares and hotels online, is usually good enough for the first few days. Afterward I can still go to the ATM and get those bills if need be.