Read the bad reviews (my mistake - I didn’t). They all say the same thing and I’m here to confirm. Great concept, horrendous organization. I spent a lot of money and time for my kids to get super excited and then super disappointed. It was confusing, and I felt like not enough information was offered upfront. The experience was stressful (for me and my kids). It took me half an hour to even understand how things work. Each activity has limited spaces; you have to register for them but it will be 30min-2hours (or more) wait. However, you cannot register for any other activity while you are waiting. Your kid can do least-wait-time activities first, but run the risk that there will be no spot left in the one they really want to do (a concept hard for young kids to understand). My son was so disappointed because the first 4 things he wanted to do were all closed (as other bad reviews say, there were a lot of closed activities). Finally we found one open that he wanted to do (Firefighter), but it had a two hour wait. Instead, I encouraged him to join a different activity, but the soonest one we found was a one-hour wait. Even though he wasn’t very interested in that activity, he agreed. When it came time for the activity (paleontology) he became a bit nervous (he is 3) and wouldn’t enter. He wanted to join his sister’s activity instead (which was also her first activity after waiting one hour) but of course he couldn’t because it was too late to register. The staff told him that since he didn’t enter paleontology, and didn’t cancel before it started, he can’t join any other activities. It was so stressful and confusing. It was all too much for him; he burst into tears and his day was ruined. In the end, I complained to staff and they tried to resolve it, but by then my son just wanted to go home. The staff told me that they succeeded in registering my daughter (7) for 2 additional activities. However after waiting to join one of them, when it was time to enter, she was told that she was actually not registered and it was too late to join any other activity, resulting in her disappointment as well. When we left, my son had experienced no activities and my daughter did 2. Everyone was stressed and disappointed/unhappy. So I paid to ruin my kids’ day? 😩 In the end I have to give one star because even though it was a negative experience, and I wished we had never gone there (we wasted a whole day out of our 1 week trip to Korea), the staff did try to help me and my money was refunded. So I lost our time, and brought stress and disappointment to my kids (obviously the opposite of my goal), but at least I didn’t lose money since they refunded the entrance fee.