There will indeed have some photos on the lounges and cabins, I will do my best to cover them
Actually, I travel quite a bit, but mostly on Air Canada. I usually write a mini-trip report in the Air Canada forum occasionally when there is something worth talking about such as the New Executive First service to/from Japan debuted last December.
You will not see many menu transcripts this time around. The main reason is because NH and SQ presents the menu in a nice and elabroate 'leather' like folder. It feels almost like a restaurant's full menu with over hundred of choices. So I will rely on photos rather than transcripts.
Champagne in First Class: Krug on NH for sure and Don Perignon on JL I think, can't remember what it was on SQ, will check again. To be honest, I don't care much about the booze however except when it's a sake and I'll tell you why in the report.
JL 48 to NYC from NRT in the evening doesn't have the new F seats. But I am not aware that JL 5/6 have special catering specific to them though. I looked up at RTW4's menu transcript with JL from JFK, they look fairly similar to my JL 9 out of ORD.