Bold move to assume they'll take cash. Many places gave up on cash during the pandemic and many of those haven't gone back to taking cash.
I used to hate the "convince" fee companies charged for using a credit card, but when it's reframed as a cash discount, it's not as aggravating.
That said, plenty of places are electronic payment only these days. Scary times, given the payment processor monopoly and their ability to determine what you can and can't buy.