Originally Posted by BuBu4

i just got off BR06. it was a 77M. took BR05 there, was also a 77M. But my mom and dad who also took BR05 there were on 77A. so its pretty random.

in J class when making your seat selection, look for the extra seat in the front cabin. on 77A, the bathroom is another seat.

in PE, 77M have 27 rows(like 27 is the last row of PE), 77A have 26.