Originally Posted by CherylD
...It sounds like we might be relegated to whatever they have left that day - is that true?...
Yes, and no. AA can, and sometimes will, be able to request seats from IB for you, and usually IB will respond within a day or two. Try it.
...Also, do I gain anything by joining IB's FF program?...
Yes, if you join you will be able to phone IB and pick a seat.