在美国，大多数情况下人们会选择使用信用卡进行支付，特别是在消费金额较大时。

因此，为了出行的方便和安全，建议大家去美国旅游时尽量不要携带大量现金（或以其他方式支付）；当然，准备少许现金，以备买零食、打车或付小费等也是必要的。

此外，建议大家在美国消费时尽量采用既可用人民币又可用美元结算的双币信用卡。

In America, most of the time people prefer to use credit cards, particularly when paying large amounts. 

Therefore, when travelling to the United States, for the convenience and safety of the traveler, it’s suggested that travelers not need to bring too much cash (and plan to pay by other means). Of course, travelers should prepare some cash to have on hand for buying snacks, catching a cab or leaving a tip. 

Aside from this, its suggested travelers make arrangements to use a credit card which can be used for RMB and US Dollars.