OhMyGawd!!!
I had no idea so many things were bad manners.
And as for that one about the nose not touching the drinking glass......now how am I ever going to achieve that with a hooter my size??
If I get a hat with a really big brim perhaps I could hide my nose when drinking.
As to standing for the National Anthem - that would depend on how you were feeling about the nation at the time. I don't approve of automatic responses.
I prefer honesty to manners every time - then at least you know where you are. My mum is unfailingly polite and well- mannered, but its hellish difficult to find out what she really wants to do when she will insist on aquiescing to everything.
I think its nice to conform to a set of manners if you know it will please a particular someone (eg your mum..), but I can't be bothered with trying to work out all the ins & outs of etiquette. I don't have that much time.

Kris