Amandil?

[Jurion]

in the Akallabeth it is written:

It is said that Amandil set sail in a small ship at night, and steered first eastwards, and then went about and passed into the west. And he took with him three servants, dear to his heart, and never again were they heard of by word or sign in this world, nor is there any tale or guess of their fate. Men could not a second time be saved by such an embassy, and for the treason of Numenor there was no easy absolving.

So no, I don't think that Amandil accomplished what he set out to do, nor do I think he ever reached Aman.