#8 - June 25, 2010, 2:20 a.m.
I am sorry, Reenah, but if you use Real ID there is not currently an option for it so show only partial information. It will show your full first and last name if you opt to use it. Please remember that the Real ID system is entirely optional.
http://forums.worldofwarcraft.com/thread.html?topicId=25578318100&sid=1 It is unlikely that our Billing and Account Services department will be able to assist you as they would not be able to remove the last name from your account or adjust how the Real ID system currently works.
As some of the others have suggested, comments, suggestions, and recommendations regarding this new service, are best directed to our Suggestions Forum.
http://forums.worldofwarcraft.com/board.html?sid=1&forumId=11122