Peach Points can only be used in issued currency and expire in 180 days. Peach Points are basically useless and will expire. Bought a flight from Korea to Japan. Couldn't not go on that flight so was issued "Peach Points". Tried to use the points to buy a flight within Japan but turns out the points can only be used to buy Korean Won products. The points are now stuck with no way to convert them, and they will expire in 180 days.