Don't forget to check out the AFF (Australian Frequent Flyer website).
http://www.frequentflyer.com.au/community/
You might be lucky enough to get someone to "guest you and your husband" into the Qantas Club - aka, QP - "Qantas Pub" where you can have a shower + coffee and relax there?
This is the November monthly travel thread. l am sure that if you send a PM (Private Message) and explain your situation to someone who will be in SYD T3 Dom around the time your there, you'll have no problems getting in.
http://www.frequentflyer.com.au/comm...9-a-19203.html
Here is Ooctober as well;
http://www.frequentflyer.com.au/comm...9-a-18918.html
Good luck, l hope this help and that you enjoy your stay in Oz.
I would guest you into the QP, but l'm over in Perth and won't be in Sydney till mid November.