Hello! Just had my big move π 491 SA.
Share ko lang experience ko (yun pagod ko sa pinas para na akong nakarating sa AU).
Last time I had an out of the country trip, paper pa yun travel declaration form so medyo nahirapan ako with the e-travel declaration kasi mabagal ang data ko, but nakaraos rin naman. Not sure if it can be done before the travel date but if yes, for those na bago pa lang aalis, better do it before your flight.
Immigration - yun IO na natapat sa akin was not familiar with Visa 491, hinahanapan ako ng OEC. I was asked if I had contract etc which was wala naman. He had to go inside and consult someone else then later gave me a slip to validate with DMW (inside the Immigration area). Asked the person sa may Immigration area pero pinasa rin ako sa DMW kiosk sa dulo ng airport. They just added a note sa slip na OEC is for those leaving with employers, since wala nga ako employer pa, no need for OEC. Went back to the IO then waited for another 10-15mins before finally allowed to go.
For those with 491 visa you may want to get a confirmation from DMW regarding OEC in case your IO is not familiar with your visa. Took me almost an hour to get past Immigration, buti maaga aga ako dumating sa airport.
Not sure if this is the same with all airlines flying to AU, but Qantas opened luggages (checkin and hand carry). You will not be allowed to enter the gate as you please, pipila ka muna then they'll inspect your carry ons. Water was also not allowed inside the gate.
Smooth na yun lahat pagdating sa AUS - SYD to ADL
Bought my sim na sa SYD airport.
Got my metrocard naman sa ADL airport para ready to go anywhere na once nakapagcheckin airbnb
Opened bank account
Applied for TFN
Started house inspection
Question - for those na nag-agent and then created their ImmiAccount upon arriving in AU, did you have to import all your documents? I just did mine kasi and there are already attached documents.

Also, did you update the regional address upon getting a semi/permanent address? TIA!