I can certainly imagine the scenario of an intended landing at Maputo to be told on initial contact that the airport was closed or that there was no Avgas available - press on to Inhambane and be told the same. You are then snookered!
No you are not! It is better to be on the ground with the problem than press on in the hope you make it.What is wrong with slipping a few dollars to someone on the ground and popping some mogas in the tanks from a local filling station?
I'd rather be flying on mogas than fumes.