I'm using propane or butane, whatever I can get. Our cooking stove
and gas heatexchanger for hot water work
fine with both.
Problem is that almost every country in the world has it's own valve and adapter, which most probably is different from yours. In the Med, in big marinas
with many foreign boats you should have no problem to get your tank refilled. But in smaller towns, less frequented by yachties, it is often difficult if not impossible to get a refill for a foreign bottle.
I carry my own adapter (without pr. reducer), and in each country we visit I buy an adaptor to fit the local bottle (without the pressure reducing valve). I then borrow a local bottle and decant via hose into mine. Works well and is cheaper than having it done by others. Tip: Don't smoke while you do it!