On the long haul flights to/from NA, I wouldn't be concerned so much about window shade battles. I've never seen anyone with the window shade open on the after midnight departures from JFK/EWR. The NY bound departures in the evening from HKG, is the same, window shades always closed sometime after the first meal service. FAs proactively come around after the meal service to close the shades. I've seen it happen in the daytime departures from JFK but only for a short time. I've sat in many different seats on the A359 and having single window in seats 20 or 16 never bothered me since I only have the shades open on take-off and landing. Not having 2 full windows just doesn't seem like a big deal when it's going to be closed for the vast majority of the flight.

Overall the J cabin on these TPAC flights is going to be very quiet, even when the cabin is full. Many times I sit in 12K on the A359, right near the lavatory and I'm not disturbed with pax using the lavatory. If you're anywhere else in the cabin, I don't envision a steady stream of pax using the lav during the flight. When my head is buried in the IFE with the headphones on, I don't notice anyone unless they are fussing with something at their seat or the overhead next to me. 12K can be a little disturbing as there is a storage bin for water right in front of the seat and the FAs frequently access.

I've sat in 20K a few times, and it's very quiet. There's very little activity on the 2nd galley. Once an FA told me that they would use that galley for PE pax but I didn't see evidence of it. It seems PE is being served out of the Y galleys. If there are PEY pax coming up to use the lav, I've never noticed it.

What I'm shooting for most, is to try and get a row in J where the seat next to me is not occupied. A few times in J, I've had a pax next to me, with their light on doing work. The directional light on the control panel can moved and It seems to always be shining into my seat when the pax next to me has it on. Any movements can cause flickering which is a little annoying when trying to sleep without an eye mask on. One of the reasons I go for 12K is I like being forward in the cabin and 11 D&G, which are almost adjacent, are almost always unoccupied. Row 19 is good for this also as it seems CX blocks 19 G/H for last minute sales or upgrades. If the cabin is not full, 19 G/H tend to be unoccupied.

For the lav in J, most pax tend to walk forward so if you're looking for quiet, I think it's better farther back in the cabin. On the A359, the J cabin isn't as long as the J cabin on the 77H/K so there's less pax knocking about.. Overall, I find it very quiet no matter where you sit in the cabin and in general most pax are either sleeping or watching the IFE.