Moderator: British Airways Executive Club, Iberia Airlines, Airport Lounges and Environmentally Friendly Travel
Join Date: Jan 2003
Location: London, UK
Posts: 22,210
With reference to point no 3, your friends will be able to enjoy the T3 Galleries lounge in advance of their AA flight. The AAdmirals Club is another option. They'll need to hold on to their used BA CW boarding passes - without these they may not be able to get past reception.
For more information, see the oneworld rules: lounge access for connecting passengers.