This is the info from the Australian Consulate General - Bali
To contact email bali.congen@dfat.gov.au
as the link on the veteran affairs site is incorrect
Due to the security matter, we will do a bag checking for all guests
upon arrival. Please come before 05.45. We would be
grateful if you could do an RSVP and provide us with the name of the
participants as we will have a guest list and the person not in the list is not allowed to attend the ceremony.