I completely agree with you about Bilbo and how aware he is of what social etiquette he should be using. When he first meets Beorn all he can think is ‘he had no hat to take off, and was painfully conscious of his many missing buttons.' It's so quintessentially British. I love how Bilbo does and thinks all of these really every day little things, but then also has the courage to complete his quest with the dwarves. It makes him so much easier to relate to as a character.