On our Jetstar flight from Melbourne to Sydney (the first flight of our honeymoon) the bag with our clothes and toiletries was lost.
We waited at the luggage conveyor belt and when everyone else had left due to getting their bags we went
uh ohh
our bag wasn't coming.
We went to the lost luggage help desk in Sydney and we had basically no help. We were told to
get help when you get to Ho Chi Minh City airport
The Sydney Jetstar staff member at the help desk didn't know if the luggage would be delivered to us by courier to the hotel or if we'd need to go back to the airport ourselves again to pickup the luggage.
It sadly turned out to be the latter which was painful as we missed going on a food tour on Emma's birthday. We sat in traffic on the way to the airport instead. Not ideal.
The lesson from all of this: always remember to pack AirTags in each bag. We were silly and forgot to put AirTags in. This way we at least would have known instantly where the bag was and not be unsure for multiple days post flight.