I've been granted a Temporary Activity (subclass 408) visa from Australia, but confusingly the document says nothing about what's the earliest date I can actually arrive to the country. There is a "Must Not Arrive After" date and a "Stay Period" of "13 month(s) from the date of first arrival".
But what is the earliest date I can actually arrive to the country? Could I go immediately, if I wanted? The contract for the 408 Activity position doesn't begin until July 10th, so I'm confused if I can arrive to the country beforehand.
NB: I'm writing this question for a friend. I'm using the personal pronoun for easier readability.