OT a bit, but I was a passenger on a flight from Pisa to Stansted where the safety briefing was only conducted in heavily Irish-accented English by a member of the CC. Not surprisingly about half the PAX seemed to be Italian and wore a bewildered look.
This being safety-related, as a former aviation person who'd flown with a few dozen airlines over 40 years, I took it on myself to write to the airline concerned pointing out that the rest of the airline world used pre-recorded tapes in the languages judged appropriate and asking what stopped 'em doing that.
It was brushed aside of course - I suppose they would now feel they could charge extra for an intelligible briefing.