Discussion on answer by Johnnyjanko: Cashless visit to Schengen countries using USA credit card

@Johnnyjanko I'm Polish and I haven't used cash in years. Everyone will accept Visa and Mastercard except for maybe some tiny village shops (though they are often franchised already any hold the standards). If one thinks going anywhere cashless is a good idea, Poland is a safe bet. Not Germany though, with that I agree.