I imagine it might have some cross-over with the fact that it is currently skiing season, and hence a lot more casual tourists will be visiting Salzburg and hearing about WdG.
It has happened before without any relation to skiing season. And even during skiing season, visitors from other nations don't show this lack of good manners, at least not in this frequency.
Arabian, Turkish and visitors from some African / Middle Eastern nations have a similar tendency to not show up or run late, but not to that English extent. Wheras Italians, French, Spanish etc., who usually have a certain reputation to be usually not on time, have always been punctual so far.
English people also seem to be the only ones openly bewildered that Austrians, Germans and the Swiss consider it rude and disrespectful to show up late without any prior apology.
What really pisses me off is that they deliberately enter incorrect telephone numbers or email addresses in their booking request so that I can’t even reach them for final confirmation. And when they show up late (and they pretty much always do), they expect to stay for an extended time afterwards, even if the next group of visitors is visibly waiting. Is that a cultural thing? Like Germans showing up way too early or insisting on their change down to the very last cent?
I might just simply ignore future booking requests coming from English visitors; if they are serious, they might show up anyway. Or I will only accept their requests after paying beforehand via a special prepayment link.
I'll make an exception for you
@TeaLovingDave and other English ZooChatters if you contact me personally beforehand. But I'm just surprised how a nation can function, and even build up a global empire, with such unreliable citizens...