Actually even before there's already some store and even fast food using crypto as a payment method . So it already started in my opinion and it will grow for sure especially now that Bitcoin becomes really popular because of the all time high in the market, and of course because of the influence of some big people around the world , especially donald trump . Haha
If the option is available but there are still many developing countries that have not gone there. In general, maybe everyone has read about BTC and its price increases, but for some places it is still held hostage by local government regulations that only allow payments using their national currency.
I also hope that this adoption will be fast and even spread because we see quite a few cases where if you travel with too much fiat, even at the airport it is detected by a scanner and the story continues with many questions from related parties.