DR,
You'd be surprised how many people don't realise where these places are ...
I was working in association with an Italian airline and we needed to get a Captain from Frankfaurt am Main to Rome (FCO) ... the morons booked him a 6am departure from Hahn ... try explaining to a senior Captain that he needs to get up at 1am to travel pretty much all the way to the Luxembourg border to then travel on the sh1ttiest of airlines to the wrong airport on the wrong side of Rome!