As long as the store or merchant accept Bitcoin, then you can pay everything in there using Bitcoin. The fee you need to pay and need a time to wait for confirmation is depend on you, whether you comfortable or not. I think it's better if you use fiat or debit/credit card when you're want to pay in physical store and use Bitcoin in online marketplace because it should be cheaper than use mobile banking or digital fiat.
There's not much to do with crypto in my country. Just being a commodity makes me happy. Right now this rule issue may be what restricts the movement of crypto. It seems that outside my country there are indeed many who open payments with crypto. Even my friend has bought a hard wallet with crypto. Nowadays it is easier for me to use conventional money for transactions. The problem is also the same, because transaction fees are uncertain and tend to be expensive.