does any body know how many Dollars i should bring to cover living expenses for 10 weeks
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Not been to the good ol' US of A before? Take a credit card - getting by in the US without one is a nightmare (not that I would know - I take several). Also the cash machines will all take your cash machine card so you can withdraw from you EU account (albeit with a charge) if you need a cash topup. I would take a reasonable sum of dollars ($500? maybe I live too extravagently?) for small change and do the bulk on credit card and top up the dollars if you need to from an ATM.
Andy