The rear cards are just held in with clips - just grab and pull them, you *will* break some of the clips so don't worry if you do, VW can supply new ones.
The front cards you need to remove the front of the grab handle - wedge a flat blade screwdriver (wrapped in some cloth) into the
lower edge and lever it off. Then undo the two bolts you will see inside, and pull off - more clips hold the rest of the card on.