WE always do Kona for breakfast each trip-never made a PS and never more than a few minutes wait, most times we are seated immediately. AT beakfast, table turnover is usually quicker than at dinner, so even if it seems crowded, it clears pretty fast--.
Every now and then as we walk in the Poly, we see a huge crowd outside Kona and go "Oh no!!". But when we get up there, we find it's mostly families waiting to get into the character bkfst at O'hana.