Originally Posted by
Often1
You misunderstand the relationship between IATA and its member air carriers. IATA is nothing more than a trade group for which its members pay dues. It sets certain general standards which air carriers are free to adhere to. By way of example, ticketing. But, IATA is not a government and it does not make the rules.
And I don't misunderstand the relationship. You must have missed the very first part of my post: " Of course airlines come up with their own policies based on IATA guidance..."
The PROBLEM is that based on misunderstanding the guidance, certain airlines have chosen to restrict items such as wine in checked luggage unnecessarily. If you fail to see the relationship between the guidance mentioning 5L and certain airlines attempting to restrict pax to 5L either per bag or per person, then you might want to double-check your math.