I often do that from time to time when I want to buy something. There were some events that I go to a coffee shop or restaurant to order some food, and I see that they don't have QR codes displaying.

That's where I started opening up to them about digital payments and Bitcoin. Although not all of them are interested, but at least I let them aware about the positive use cases of Bitcoin and other cryptocurrencies to restaurants and coffee shops.

It's all about massive adoption by giving them awareness.