Sorry to pop your bubble whkchan but as a BA Silver/OneWorld Sapphire you cannot access domestic QF lounges. Only BA Golds/OneWorld Emerald can access these lounges. You can access the international lounges, when flying internationally, but not the domestic lounges when only flying domestically. Shocking I know. The only way around it is if you are connecting to or from an international flight on that same day and hold/held a business or first class ticket for the international leg.

I was also looking forward to accessing these lounges as well, but as a silver, I cannot.

More info here:

http://www.qantas.com.au/info/flying...geAccess#jump1