In October, with Melbourne offline, there were 23,442 international traveller arrivals into Australia. although approximately 3600 from NZ, when the "quarantine free arrival" was introduced into SYD mid way during the month (-1600 into BNE which still required quarantine) so net in bound passengers, requiring quarantine was at least ~21,942.... So that's about 5000 per week.I very much doubt that the hotels could actually service that number of people. And the Qld thing meant that many had to repeat their two weeks stay. The cap is meaningless if there are no hotel spaces and people to provide security.