KIA company operated showroom (Lucky One Mall, Karachi) told me three important things:
1) Do NOT get any type of coating done on your car, it will void the 03 years paint warranty, the car already comes coated with paint protection.
2) Do NOT pay extra to any dealer for undercoating, the car already comes undercoated.
3) 19L initially for the AWD booking, then rest 15 days before delivery. Also, incase of a price hike, you have 15 days to complete full payment to get the car at previous price.