having done this route numerous times both Y and J, the key is arrive at lounge by 10pm so u can take 2.5hr of power nap. flight is way too short for full night sleep. or if u worried to miss ur flight sleep by the gate.

i wouldnt eat at 2am in my regular life so i wonder why anyone is fussed about meals. Is it because one flys J so need to feel they get the money's worth? Trust me better off getting max rest so u can enjoy tokyo food.