In 77H, the J LAVs are behind Row 12. The only LAVs in front of Row 11 are the F LAVs in front of Row 1. So Row 11 will have a little less traffic than Row 12.

There is no 15D/G. I suppose you meant 16D/G. Almost everyone in the main J cabin visiting the LAVs and the gallery will pass by. You have the highest amount of traffic in the entire J cabin.