I hit Morning Calm mid-itinerary, in time for my return BKK-ICN-IAD flight. On the BKK-ICN 747 I was put in a prestige seat upstairs (econ service). On the ICN-IAD leg, I got an empty 3-seat row in 777 economy. Maybe it was the Morning Calm status, maybe I was just lucky. Either way, I was pleased.