QF's AJ a short time ago has said that both QF and JQ are looking to assist affected pax - if pax present themselves at any of the QF/JQ counters with the ticket and they'll see what they can do to honour the travel for the same cost of the already purchased fare. I'd be thinking that may come as a surprise to the counter staff until the advice is given from above to below .. but refer to AJ's announcement via live interview about 15 minutes ago