KCI Lotte World Adventure is a cash machine a 15-minute walk from Jamsil Station on Seoul Subway Line 2. It is used when cash is needed at Lotte World, which has many rides and food options. Lotte World is indoors, so it is less affected by bad weather, and it opens at 10:30 a.m. on weekdays. It is crowded because it draws the largest number of people.