So Begum finally caught up with us at around 10:30am yesterday at Myeongdong Exit 2. By then, the klook booked tour bus had long been gone.  Luckily I found a blog detailing how to get to Nami Island and all the train transfers we had to make. Despite the sometimes confusing signs and locating the stops, riding Seoul's train system was a breeze. I liked it better than the bus ride back to our hotel.