Maybe it is hard to grasp, but what is not required at one airport, is required at the other. So just sometimes it happens you do or do not mention something because it is out of the ordinary. As well some calls are techniques which proved to be clear in most of the world. Therefore, when you have crews who fly worldwide making a call which works with 98% of ATC worldwide, please don't be annoyed by this. It is not bad will, simply at some stage you are forced so often to phrase non-standard just to a have clear and therefore more safe operation that when you fly in an area where CAP is the standard you kind of lose what is called standard.