Never been to Sweden, so no idea, sorry. My understanding from most EU countries I visited is that VISA/MC works and AMEX usually doesn't. Also now that I thin

Never been to Sweden, so no idea, sorry. My understanding from most EU countries I visited is that VISA/MC works and AMEX usually doesn't. Also now that I think about it, most of these things (except #3) happened before the widespread use of NFC. (IIRC 2017 and 2012). My points were more "why would 100% cash-free bad", not necessarily just in Sweden.