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jennyjoan's anecdote ("I remember reading this... about Prince Andrew calling into the downstairs area where staff were enjoying a cuppa at the table. He said "I'm going back out, and when I come in I'd like yous all to stand up".)
That, and all the little snippets over the years, have convinced me that I should definitely NOT have followed the trade of my great-grand pa - he was a butler.
I would have lasted about 60 seconds in one of the posh houses he worked in, and might even have been hung for my troubles.
Courtesy, respect, politeness, yes to all of them.
But belly-crawling?
Not in my world, chum.