Originally Posted by Points Scrounger
It appears no minimum purchase HOWEVER ... you only get "credit" once per day per restaurant on this specific promo. NO splitting tabs within AA here, so if you're interested in other programs (such as the current DL and UA offers through 12/31), it'd be worth it to charge say $5 exactly to your AA-linked card and the balance on the other card. Just a thought.
Good point. Alas, I will just have to split my tab between my wife and my accounts, then.
Of course, once December rolls around, I will have to split it with my United account so as to put the final nail in the coffin of that promotion, as well! ^