Maybe no-one should ever go outside Daphne?
To answer your question CharlieBoots, the current laws and regulations haven’t changed.
Refer here re the proposed model by-law, which I believe may have been shelved.
But there is nothing stopping you putting up a by-law like that to the OC for approval.
Refer also here:
https://www.cancercouncil.com.au/wp-content/uploads/2011/10/Case-studies1.pdf
The other option is to progress an action on the basis that those owners are causing a nuisance under section 117 of the Act, which was successful in the Highgate case. It is not correct for your strata manager to say there is nothing they can do, so I would suggest that you go back to him/her and tell him you have a legitimate complaint and that you expect to have it taken seriously. If necessary put it in writing.