I've flown redeyes from LAX to JFK, for anyone seated in the vicinity of the BC galley there is (1)lots of noise from FAs, (2)lots of bright lights...so flight crew related disturbances to pax is the norm; so using a reading light and/or subdued conversation should not be an issue.
[I haven't flown this route recently, so maybe on newer planes the galley area is more isolated(?)