Fwiw you can tip with credit cards everywhere now. I don't think tip receivers like it, but tipping sucks, they can deal with it. I don't carry cash anymore.
In a case like this, you should bring cash with you anyways. It is a different situation than going to a restaurant. When you travel one should always have cash, even if one normally doesn't. It's common sense.
Personally, I just stopped doing that.the tips were small to begin with.
I think people also know non Americans aren't going to get it right. If they're the type of person to get offended over that, I wouldn't spend my time worrying about their opinion of me
Even credit cards seem super backwards in the US with them actually taking your credit card and giving it back to you (and your tip being just written down on a slip of paper).
