You just came to the place and you want to buy from the hawker and zoom off, and you are to pay with bitcoin because there is no physical cash in your wallet/pocket/hands. And because of the delay in payment I was thinking that not everything we see can be purchased with bitcoin, is it true?
The smart choice would be to withdraw some cash from a nearby ATM and pay him, or just look for other vendors that accept Bitcoin if you really wanted to use your BTC to get some bananas. I don't think it is a big deal, at the end of the day you can't pay with crypto if the stores don't accept them.
Personally, I never use my BTC for daily necessities since I don't think it is worth the cost. But BTC is my go-to choice for international payments. I use BTC to pay for VPN, gaming top-ups, and stuff like that regularly. It is cheaper, faster, and allows me to decrease my personal data exposure compared to using a credit card or something similar. Would I like to pay for everything with BTC? Maybe in the future, but for now I see no reason to use my Bitcoin to buy a coffee.