I've been doing this for some time, but I don't use Bitcoin as a payment system for daily living. I haven't found a viable way to pay for petrol, diesel and food with Bitcoin. I receive my pension via the fiat banking system, and pay for daily needs with a credit or debit card, or I use cash.
Check my thread about Bitcoin and offgrid living.
I would definitely check out your thread about Bitcoin and off-grid living because I encountered same issues trying to sponsor an RV trip with solely Bitcoin.
I want to draw up a plan and try as much as possible to hold fiat and instead spend profits from my BTC investment.
The question I still haven't figured out is this, is it till BTC is recognized as a legal tender in the country that one intends to journey through or journey from, that it will be possible to fully fund an RV trip of such manner, with only BTC?
Is it also going to be better to go alone or with a better half or a family?