Just make sure every jobsworth has a salary component based on flight movements. Airports are typically managed by soviet standards.
What reason does the fuel man have to hurry up or to squeeze you in? What reason does the airport employee have to grant you PPR? Capitalism, market and competition are the way to improve service. If airports were decently managed they would offer lots of specials like “come to LGKR, buy 200l of fuel and get the landing free” or “package for landing and hotel including transfer only EUR XXX”.
The only big airport in Germany I know of that is managed by somebody with a brain is Hannover EDDV. Smaller airports that are well managed are Portoroz, they even come to the AERO show every year. There should be a booth of the “Fly to Greece” tourism association.
Should be like the Bahamas of Europe really.