Putting up with the high-pitched whining noise from unimaginative carpers
Keep it nice
making sure there is some prospect of rescue (in most of the 3rd world, there isn't a rapid-response SAR service) in case of an engine failure
All ICAO states are bound to provide 24hr and effective SAR response. They are also bound to honour the five freedoms of flight: one of which is overflight and the other is to land for technical reasons. Trouble is I am not sure if all of those coutries are ICAO or not.