I missed this thread until now. I've taken this flight in all classes this year (same with the QF options). My thoughts:
- great service in all classes, as you would expect from a Japanese carrier;
- mostly Japanese passengers, so everyone is very polite, fast to board, and in general a pleasure to fly with. If you've flown on JAL/ANA before then you know what I'm talking about.
- best Y seat out of all carriers, loads of room in every direction and very comfortable. Totally fine for a day flight.
- the PE seat has even more room, it's a shell seat style so you don't have people reclining into you, although I felt it didn't recline as much as other PE seats as a result. The food/beverage is exactly the same as economy, so it's an Eco+ rather than Biz- product, and the pricing is reflective of that. The snacks in the galley are quirky and the foot massagers are also a nice touch. The economy main meals have generally been ordinary for me, the second meal often has noodles which are great.
- the J seat is fantastic. Window seats are very private. Ignore the seatmap, it's all aisle access, the seats are staggered. I'm a big 6 foot guy, and it's the best lie-flat I've ever slept on. Plenty of legroom, soft seat (some products are too firm), awesome pillow, and the blanket was also nice. Best sleep I've ever had on a plane, including CX F. No air vents, so I generally sit further back in the cabin otherwise it gets too hot. That said, I've found JAL don't overheat the cabin like some Asian carriers tend to.
- The supper snack after takeoff from Melbourne is pretty ordinary and not worth waiting for. Just eat in the lounge and go to sleep ASAP after takeoff. As mentioned, the 3rd party MEL lounge is pretty ordinary. The QF lounge has seemed better than normal in the evenings when the China Air flight is running, that could just be a coincidence though. To be honest I just eat at home before heading to the airport.
- The breakfast is served about 2.5 hours before landing, which is hugely annoying, I think it's far too early for an overnight flight. You'll be asked after takeoff if you want breakfast and either the Western or Japanese option. Everytime I've had the staff come back and say there isn't enough Japanese breakfasts for everyone, would I switch to the Western. It's usually a polite but firm request - feels like I get targeted as one of the few westerners on board, which I guess is understandable, I'm more likely to switch than others. Each time I've then said don't bother and just slept through instead. You can get a coffee and bread 30-45 mins before landing.
Hope this is helpful for someone considering taking this flight. I highly recommend it. If you have the time, doing the SYD-NRT flight up and NRT-MEL down lets you do both comfortable in Y quite cheaply. If you're short of time, or work is happy to pay for J then do the opposite. I just wish it was into HND instead of NRT, and that the MEL-NRT got in a bit earlier, but these are minor niggles.