As this question has been open for a while and as members have not indicated that they have completed surveys, it may be worthwhile contacting one of the Sydney Crown cemeteries or InvoCare directly to see what information they may have.

We recently undertook a vehicle count of 1 cemetery provided by our traffic section.  Equipment was installed for 12 days commencing the weekend before Easter. The information has been helpful and to provide a greater overview we have scheduled further counts for Father's day etc in line with our cultural calendar.  12 mths of data will help us to greater understand our visitation rates