They may leave trash all over the airport, have bizarre taxi signs - if any, confusing taxiways, collapsing terminals, "security" whereby the arriving transit passengers from an un-named but suspect continent (hey - I did learn my PC lesson!!) and airline are allowed to mingle with passengers and crew ALREADY cleared through (in other words - anything including a howitzer could be passed on), Captains are addressed as Mister if you are not French, the protest strike du jour, and the rubber gets removed from the runways once a decade only if required.
BUT>>>>>
Try to call ground before your entire aircraft and your trailing kerosene exhaust has cleared the inboard runway. THEN you will encounter some real Gallic ire.