Why would saying the names of the crew embarrass either the passengers or the crew themselves?
I always introduce the crew (if the Captain hasn't) and I haven't noticed any blushing crew members lurking in the galley
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I haven't worked for a charter company so don't know if any do it but it's been common practice where I work for more years than I care to admit to! I guess you could say it's sounds "so so scheduled" to me!