I also went to the roadshow. I sat in the New J, and there doesn't seem to be a difference at all with the ones in the air. The cabin crew can serve food sideways before, assuming the TV is not pulled out, which it wasn't in the picture.

Another thing I noticed in the roadshow is that the F/As manning the First Class seat is more proactive, helpful and enthusiastic, while the ones manning the Economy Class seat just congregated in one side and chat, and only answers questions when asked. The Business Class F/A's service is somewhere in between. It just bears too much resemblance like the service in the air.