You have earned the trust of the Elves of Lothlórien, and the Galadhrim Guards outside of Caras Galadhon will allow you to enter.
'You have earned the trust of my people, ${PLAYER}. Let me know if you have a desire to see the beauty of Caras Galadhon.'
The Galadhrim Guard outside Caras Galadhon is waiting to speak to you.