Check out this link:
http://www.wireless.att.com/learn/why/upgrade-advantage.jsp
If you read the fine print, it is clearly stated that the main line for a Family Plan IS elligable if it is over $99/month. The $9.99 added lines are not. I noticed on my bill that my wife's line was listed as the primary, so I called in and got them to switch it around. It showed up immediately on OLAM. With my data plan, I am now up to $89.99, so I can just add a text plan or something for a month, and I should be good to go. Hope this helps anyone else out there with an FP.
********tttt. My iPhone should be the main line on my account, but the second line is the main one. Had my iphone been the main line I would be eligible for the 199/299 pricing. The ****ing name for the main line now is different than the name on the account. Come onnnn