You can rent and return it at the time I informed you below. For reservation inquiries other than the relevant time, please contact the customer service center (1577-1949) or Kakao Talk channel (@Roundel) for adjustment.
From 05:00 to 21:00 at Gimpo Airport
From 07:00 to 20:00 at Jeju Airport
*Reservation availability time may vary depending on the season.