I had my first flight in J two weeks ago Perth - Sydney and thanks to the advice on this forum phoned QF to request upper deck seats if possible. I ended up with 11A which was the front row right behind the coughpit!! Service was excellent, plenty of room, food was good, coffee was ordinary but at least it was served in decent sized mugs and overall it was a great flight and as mentioned previously by others, it is going to be real tough going back to Y! I would absolutely recommend calling and requesting an upper deck seat just so you get to walk up the stairs once. By the way, everyone seems to bag kids on planes but there were a couple of young kids up stairs on my flight and they were the most well behaved children you could ask for. They had a tour of the flight deck and plenty of room to move around on the upper deck - we didn't even know they were there. I think the extra room for children makes a big difference.