Last time I visited 10 years ago, paper money was more widely accepted than Visa/Mastercard; even in Berlin :) Why I was curious of the development of this. Seems on social media posts that some hipp bars in Berlin now and then take crypto payments for drinks, at least xD
Yeah... Covid did help a little with the paper slips I guess, but as a precaution I'd still recommend visitors to prepare themself for a not so friendly german-stare when pulling out the credit card at a small coffee shop or bakery 😉