Thranduil's suggestion sets a precedent for Aragorn and Legolas to meet during the years after The Battle of the Five Armies and before Fellowship of the Ring sees them both in Rivendell.
The Lord of the Rings offered many members of the Fellowship of the Ring the chance to go to the Undying Lands, but Aragorn did not go. The Undying Lands were Valinor and its island of Tol ...