I know your face.

[Tuor of Gondolin]

"I'm curious to see what people have to say about Sam and the Gaffer."
===============
Exactly what I was thinking. While there's more to go on in the book,
the movie Gaffer. by implication, has raised an independent son. Sam
would never leave the Shire on his own, but can go beyond hobbit
insularity to take care of, assist, etc. Frodo. The gaffer (in the tavern)
makes his views clear to Frodo and Sam, but doesn't seek to dominate
them ala movie Elrond and Denethor.

It seems to me that movie Arwen isn't as strong as others, it's only a vision
of her son (why not her daughters?) that persuades her to defy daddy.