Money and Cards in the US [closed]

I'll be visiting the US. I have several questions about money and card use in the US, the grand scheme is somewhat: What is my best strategy for paying stuff there?

I suppose that I can pay larger amounts by credit (debit) card - for which amounts do I need cash in daily life, with how much cash should I run around?
How trustworthy are people with cards? If I pay a waiter with card and he takes my debit card and goes to the counter, is that considered rude or normal? Is there sufficiently much abuse going on that it's not rude from me to want to always see my credit cards? Does this maybe only apply to certain places?

Pictures about "Money and Cards in the US [closed]"

Money and Cards in the US [closed] - Pile of American paper money on black surface

Money and Cards in the US [closed] - Crop unrecognizable male in casual outfit standing with different nominal pars of dollar banknotes in pocket of jeans jacket

Money and Cards in the US [closed] - One dollar banknotes placed on table

Why are credit cards being closed?

If you've stopped making payments on your credit card, closing it may be the card issuer's way of keeping you from making any more purchases. This can also occur if you simply have too many late payments on your account, even if you catch up in time to avoid default. You've consistently exceeded your credit limit.

Are banks canceling credit?

As the economic fallout of the pandemic continues to unfold, banks are rushing to close credit card accounts or slash credit limits to curb their risk.

What happens if your credit card is closed?

If the card is closed, there will no longer be an available credit limit on that account. Consequently, losing access to the credit line will affect your credit utilization ratio when there is outstanding credit card debt.

Why did Bank of America closed my credit card account?

Your account is unused. That's because the credit card issuer makes money in the form of interchange fees (sometimes known as "swipe" fees) when you use your card. If you stop using the card, the issuer may choose to shut it down because they're not making enough money to justify keeping the account open.

Collapse of Banking System Like Lehman Now in the Cards

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