Are these limited only on a capital or around that place?

Don't know about the Thai's geography and spots but we will have a flight schedule on August this year. Places to visit are Phuket, Ko Samui and some other places on our itinerary. Not that Im interested on crypto payments but it's a good alternative. I still want to pay with fiat because don't want to harm my crypto with the current rates but instead of using credit card, I think crypto payments is a good alternative. No worries to bring only enough fiat on spot places.