Kakao Customer Service Main Useful Tips 1 Can I use my Seoul Bus Favorites in Kakao Bus? 2 How are the new Favorites different from the previous one? 3 How do I use 'Suggestions'? 4 What are the benefits of logging in? 5 What is a 'Bus Arrival Notification?' 6 What is a 'Departure Alarm'? 7 What is an 'Arrival Alarm'?