You know that in most places in Los Cabos you can pay with your credit cards, however, there are some places (such as the sale of handicrafts) for which you need cash.
And this is not a stress issue in Los Cabos, as you can easily get cash at any bank or ATM. So you don’t have to worry, you could even cancel all your travel expenses in cash if you wish.
However, one of the tips you should keep in mind is that large bills can be difficult to change, so it’s best to have small bills ($5,$10,$20) handy.