Originally Posted by Genius1

You absolutely should go to the Galleries First lounge - there is no point going to the CCR, as you're not eligible for access. Make sure you keep hold of your AA F boarding pass stubs to show on entry to the Galleries First lounge.

The AA Arrivals lounge is not a patch on Galleries First - just stay airside on arrival in T3, following the purple Flight Connections signs.

Once in T5 and through security, go down one level to gate level. Follow the signs for South lounges. You'll go up an escalator and will find yourself in the lobby between the Galleries First lounge and the CCR (the Galleries Club lounge is upstairs, above both of these lounges). The Galleries First reception is immediately on the left in the lobby.

Galleries First really is a very nice lounge - nicer than anything AA have, at any rate! The main differences compared to the CCR are that the Galleries First lounge is much larger and less private, with more of a focus on self-service (the CCR is fully waiter service).

http://www.flyertalk.com/forum/briti...ies-first.html