On the old site it was very easy to add the info after you booked your flights...I have done it many times. Now I cannot figure it out. I did book through a TA this trip, and she said I needed to wait until 45 days out to add the ME info. I don't know if this is new, or if this is a policy of my TA and she needs to add it. I figured I would worry about it when the time got closer.