A friend of mine got ceremony date 04 July in Craegeburn Hume Council, She appeared in the test on 7th April. Approval 27 April. application 2 January 2017
I called them twice, they said they can't accelerate application by calls. Wait 4 upto 10 to 12 months from application to ceremony. That is service standard now
Some of councils in WA are really fast. I think it depends on officers and number of applicants. DIBP had downsized lately. Not much employee available for the processing.