On my latest two trips in J class, I was not greeted going to HK, but was greeted on the way back to US. Ironically, although I wasn't greeted going to HK, but the ISM came by a few times to make sure I'm ok and if I needed anything else. On the return trip, when I was greeted, that's the last time the ISM took any interest of me. And her greet was rushed and disinterested (hi, my name is, good to see you again, bye, without even waiting for me to response.) So there is more to service than greeting.

Both trips the cabin leader in J took extra care of our family, sometimes I wonder if that will happen if I'm just GO and not DM.