The Blues will be celebrating all things Welsh on the night of the match and the Supporters Quarter will be full of activities from live music, children's entertainment and Welsh dancing. There will also be dozens of stalls selling Welsh produce and gifts.
It promises to be another red hot encounter between the Welsh regional rivals as they both look to climb the Magners League table. So if you are a member of the Urdd, make sure you make the most of this great offer.
Simply call the Cardiff City Stadium Ticket office on 0845 345 1400 quoting URDD and your membership number to use the buy one get one free offer, or show your Urdd membership card on the day of the match.
What is the Urdd?
The Urdd is an exciting, dynamic movement for children and young people. It organises a range of different activities across Wales. We have 16 development officers who work all over Wales to ensure that the Urdd offers a full programme of activties for children and young people.
The Urdd was established in 1922 to give children and young peope the chance to learn and socialise through the medium of Welsh.
It gives the young people of Wales the chance to live vibrant lives through the medium of Welsh, learning at the same time to respect each other and people around the world.