Everything is so worth it. We bought the 120-hour unlimited pass, and we managed to go to around more than 10 places of interest, such as Lotte World, SeoulLand, Everland, Namsan Tower, Nami Island, Gyeongbokgung Palace, Hanbok rental, SEALIFE COEX, Zoolung Zoolung, Trickeye Museum, and Deoksugung Palace. If you add up all the entrance fees, it is simply worth the money. You save up a lot. The only concern is that when you purchase the pass through the app, there is no specific indication of where to collect the physical pass in ICN international airport. We spent so much time roaming around that big terminal asking information counters, but they failed to recognize the information. But finally, we approached the SK counter at the arrival level near gate 2 and were finally acknowledged for the issuance of the physical card. What a waste of time in the airport searching for the right channel to communicate with. If ever the instruction from the app was clear in the first place, things would have been easier. Hope the app can look into this concern.