I believe it is up to the crew. Sometimes they are chatting near the A Galley and other times near K, and sometimes in the center. So it may not be as noisy depending on where they are sitting. What really disturbed me was the slamming of the meal carts in the space behind the A/K seats. If you are a light sleeper like me who is looking to really catch up on some sleep (and get over jet-lag), it can be really annoying being woken up with a jolt. I decided after a recent 'awful' experience in 4A, that I would rather be in J than in row 4 In F.