Guys, I was able to pre-assign my seat to ROW 1A on BKK-PUS-BKK with KE. Since all of KE's Prestige class rows start on Row 7, 1A, really means a seat in F section. ^

I just called KE office in BKK to arrange this and told her I wanted seat assignments and my choice(s) were first row, specifically, ROW 1.