Bushy,
May have misinterpreted you somewhat.
A number of poster's have stated the word(act?) common sense. Although many use this in the real world some may not, skill level, experience or just not available. The authority I believe falls into that last category,"just not available"
The AYE example sounds very much like pollitics, people with no brains and their head stuck up .............. I think you get the idea. Two places with same name as in your e.g is just an accident waiting to happen.
I have been to AYE any number of times and, apart from the occasional cessna or piper tour gaggle have found that all use common sense and sufficient calls to get the job done. Many of these calls may not be from the book but they do get their piont across.
My way of handling the fantastic system we have is to use the correct forms when and where required but make a call that gets my piont/intention/position/request across. If that means not using standard phrasology at times, so be it.