In their BF cabin, so I can offer only my view points.
By the time I got on the flights either in Houston, Denver or Narita, I am so tired from waking up early, or connecting from another flight.
I just passed out after the meals, and did not even noticed anything different.
One fun fact though, the lav door opens on hinges, so the whole door is pushed back into the lav. And to flush, you have to lower the cover and wave at the sensor...I guess to lower the whush noise.