If you want to get an idea of the line for souvenirs before the concert, the first two pictures will tell you very clearly.
Credit: LSG EuroAiren
The third picture is of concert attendees who are getting souvenirs at the last minute before the concert started at 7pm, KST. This picture was time stamped at 6:40pm JST/KST.
Here’s the picture of the concert screen before the show
After the concert, Airens were waiting outside for Seung Gi to leave the concert hall. He opened the van door to wave to his fans for about 200 meters as he disappeared into the night
Credit for the first 5 photos: lsgairenint
Credit for the last photo: as marked