Thing is these standards aren't some posh way of doing things.
My grandparents weren't anything high and mighty, in fact grandma worked in the cotton mills in Lancashire as a weaver.
And gawd help any of us that didn't hold our knife and fork properly and if we even attempted to put elbows on the table you would get a belt round the ear.
And Basil does yours give out proxy rights to her mates if they are in range?
It isn't the eating of the sandwich's, or banjo's, bacon butties which is the issue, its the environment which you are eating them in. I presume Sir doesn't have a problem with said items when consumed on the range served up by either the slop jockeys or the Naffi wagon. His objection is when he enters a respectable area possibly with guests and he comes across the picture of people shovelling food off there plates into there mouths with there hand or worse not having a plate full stop.