Thanks for this thread. I just called ATT and got a $30 credit on my next bill.
I was very nice and polite. I told the man that I just ordered a new phone and I bought it from them and I have been a long time customer and the activation fee doesn't seem right.
He immediately said no problem, that he would take it off as a 1 time thing because I am a good customer.
He did not have time to lookup whether this was done before, so I am sure you can keep doing this, as someone elese mentioned they had it done twice as a 1 time thing lol.