Flying Mermaid,
I enjoy the ambience of the Flagship Lounge in T4 for a while, then head on over to TBIT. The Duty Free selection is much better at TBIT, and given the state of the AUD some things are better to buy there than on arrival in Australia.
Also, I prefer the showers at T4. Nicer toiletries available, & not as long a wait in the late afternoon / evening. It's tough having 2 lounges to choose from. :mrgreen: After being away from home I enjoy the Aussie voices around me in the TBIT.
I think I get access based on my Amex WP, my WP, my QP, and also my AA 1st BP for incoming flight. Have been trying to clarify all this recently. WP & 1st get me into Flagship, all get me into Admirals Club.
Could be wrong..