I have flown them twice within in Aust, and also flew them twice as a dom pax on an int flight, also within Aust. Total 4 flown, and got 1 cancelled on me, saga as next lines down.
Knew what to expect, re their service, and being squashed into a narrow seat, VA is tight, but JQ is worst. but the worst of all was yet to come...
had one of the worst things happen, had booked to fly them a third time, totally flight within Aust, in 2015.
Came into MEL from NZ, tried to do OLCI with JQ website, within 24 hour window, website said NO, "tech" prob on the website meant I couldn't do OLCI, they knew then 24 hours prior that the plane wouldn't fly, but I didn't know they had cancelled the flight then.
Got to MEL airport 4 hours within time to fly, tried a kiosk checkin, nope, cannot do that either.
Thought, ah, why not go to the QF's QP in T1 of MELd airport, and come back later.
2.5 hours prior to flight, had a sms that the flight had indeed been cancelled, and that I should go to a counter.
JQ was going to put me up in a hotel for a fixed price, but the hotels around MEL airport are not cheap, exc the Ibis Budget of course. Don't think that they were going to put me there.
The flight I booked was the last JQ flight of the day, but I had an early start the next day in ADL so couldn't do it, ie, fly JQ the next morning.
I was fuming.
Went to QF's counter, and bought a whY ticket, lucky that they still had seats, for a 17:00 dep from MEL.
Got back to ADL, rang JQ's phone number, and of course, the call went to the Philippines.
She offered me the chance of "trying" to get back my fare I paid to JQ, too troublesome I thought to myself.
So, I got 20 QF SC, 10 QF SC for the QF flight I flew, and found out, 10 QF SC for the replacement JQ flight the next day I didn't fly, but they gave it to me.
JQ are ok to fly, if you are flexible, and have no commitments the day of the flight, or the day after, (just in case they cancel flights).
Granted that QF also might cancel flights, but at least you won't be stuck, if you flew QF as they can put you onto the next flight (99% of the time).
Anyways, best of luck for your JQ flight, OP, and hope you do make it where you need to go.