I travelled to Argentina around this time and, plane ticket aside, I used Bitcoins for everything. I bought BTC from localbitcoins, travelled there, paid for my stay and some meals in BTC (there was a website that showed restaurants and cafes that accepted it) and exchanged BTC for ARS for the rest of expenses from someone whom I met via localbitcoins there (could be you!).
This was peak crypto actually. It was useful, peer-to-peer, actually allowed people to opt out of the monetary system, it felt like a community, there was this sense of excitement.
Then all the crypto ICO pump and dumpers with frog avatars came and it was over.