Two articles on Sam: LINK about encountering Faerie
LINK2 about the "simplicity" of the choice in Cirith Ungol
Sam, in the book, is the batman/servant of Frodo and they have a protective relationship for each other (I think of the character who cares for the Lord in Downtown Abbey). It was based on Tolkien's batman in WWI (who did the laundry etc for him) and on the ordinary working class "tommies" in his regiment, who he admired for their courage and "stiff upper lip). The haracter is not 'cockney" but a country man, maybe a country man who now worked in the factories of the north: i.e. like the neighbor's that Tolkien knew as a child.
In the movie, of course, it was changed. Sam is now a working class stiff (Sean Astin played him similar to the character "RUDY!": a loyal friend and hard worker who would stick at what he started no matter what).This changed it to a "buddy movie", where the characters were different but equal...
But that change was probably needed, because few modern folk have personal servants anymore and of course the "stiff upper lip" has been replaced by teddie bears and instructions to flee terrorist attacks, not fight back.
Luckily for some on one British Restaurant, not everyone got that message.
The terrorists ran into a football fan (these thugs have a bad reputation in Europe) who fought them off and gave the folks time to flee:
“Like an idiot,” he told the newspaper, “I shouted back at them. I thought, ‘I need to take the p*** out of these b******s’.” “I took a few steps towards them and said, ‘F*** you, I’m Millwall’. So they started attacking me.” Mr Larner added: “I stood in front of them trying to fight them off. Everyone else ran to the back.
Fans of the south London club have long prided themselves on their refusal to duck a fight, celebrating their intimidating reputation with the chant: “No-one likes us, we don’t care.”