Wiruna at Ilford is open for the weekend 7th to 9th September.
I am hoping to be there for this weekend
see this link
http://www.asnsw.com/node/1434
Not too sure about wheelchair access, I think the toilets have ramps, but not too sure on how wide.
Depending on who is out there will determine whether observing is possible on 9th/10th. sometimes members stay on during the week.
I am sure you will be most welcome on the 8th
John