Recently I was flying 2 times with charter airlines.
The "after landing" communication which usually says to stay in your seats and keep your belt fastened had an additional note which I've never heard before: to leave infant boarding pass on your seat or give it to the crew when leaving the plane. What is the purpose of asking that? (I did not obey both times because I had lost it.)
The communication was in English by the Turkish crew to my Polish ears. The airline was Mavi Gök Airlines (MGA); the itinerary was Wroclaw to Antalya and back.