I had my lap child with me a few months ago and AA had blocked the seat next to me since I'm PLT with lap child. They told me as much when I had to call them about it, since I was trying to put my wife (separate PNR) next to me in that seat. They were happy to unblock.
Last edited by MrKite; Jan 4, 2011 at 1:36 pm
Reason: More information, oops.