I am glad you are safely asleep.l and hope the ill passanger is okay.
It still amazes me how manual the process is for hotel and meal vouchers when there is a delay/cancellation. I have been on enough of these flights to know what is going to happen. I understand that finding staff for the unexpected event can be difficult but the process should be more automatic. As passangers deplane provide the hotel and meal voucher and direct them to the transportation for the hotel.
As to the cost and who pays I had assumed this would be an insurable risk but I actually do not know.
Safe travels to Australia, and loved how you said they did not speak Aussie. A common occurrence in my world! Well except in Australia and i do mot love there.