I dread to think what CASA would charge the applicant (organiser) for a single approval for these types of activities.
The organisation planning this certainly aren’t amateurs in the business, probably one of the best more like it. Case of self regulation in this case would be more appropriate in my opinion, let the pro’s manage it, not the incompetent regulator (and don’t mean that in a bad way) - I can guarantee that CASA don’t have a competent (current) FOI within the organisation who is current in low level formation flying through the CASA FCAT program, FOI re-currency training paid by the tax payer.