There is only room for one row of text. If you want to have "DVC Member" added to your card, they would have to remove "Charter Cardmember". I asked about this when I had a new card issued to change the design. If you want to make the change, call Disney Visa (the number on the back of the card) and they will do it.
oooo - decisions, decisions. i already have "charter cardmember" so i need to decide if i would rather have "dvc member". i was really hoping i could get both.