I added 5 AUs to my SPG (I didn't give them socials when I called to add them, I told the rep I didn't have them).
I got the cards in the mail and when I go to americanexpress.com/activate it says we are unable to activate your Card at this time. Please call the 1-800# referenced on the sticker on the front of your card for activation.
I thought I read on here that people add bogus AUs all the time without socials and it worked fine?