Again
Why is that relevant?
Is there no case where your Yom tov clothes or wedding clothes are in the bag?
Law is law
Airlines are liable for "essentials".
YT clothing, while important, is not "essential" by most readings of the word.
Most airlines tell you (either in online baggage guidance, or when asked) to hand carry wedding clothing and NOT check it.
Honestly, maybe s/o could post the actual text of the relevant international convention... rather than all of us postulating that they are obligated to give us whatever we claim we need when we actually have no idea...
