Originally Posted by
EUnomad
In the US, you can survive with just a credit card (but make sure it's US issued!).
Have you had trouble with non-US-issued cards in the US? I've found that the most important thing is to have a card that's part of the Visa or MasterCard networks. There are far more places in the US that don't accept Amex (let alone JCB) than in Europe that only take cash
