Thank you for the reply . I would be travelling on a UK passport and ultimately I am actually trying to get to Fiji. I booked to Syd as thats the furthest I could get on the 241 voucher and was going to pick up a small hop from Syd-Nad.
I think the general consensus is that there is no certainty on if I would win the fight or indeed if this route is even a viable option with respect to Aus opening even for transit if I did, so likely better taking the refund in this instance.
Thank you !