A possible summary is:
Three friends, Seungmin, Hyunjin and I.N, go on a picnic at the Han River. They set up a tent, order food, play games, and chat. They also go on a paddle boat and have fun bumping into another boat. They end their day by taking photos at a photo booth and giving themselves nicknames based on their food preferences: Rice, Bread and Flour.
Here are some key facts extracted from the text:
1. The text is a transcript of a video by a group of three friends who call themselves CARB Racha and go on a picnic at the Han River in Seoul.
2. The three friends are Seungmin, Hyunjin and I.N, who are also members of a K-pop group called Stray Kids.
3. The friends wear jeans, set up a tent and a table, order various food such as chicken, kimbap, tteokbokki, ramyeon and burgers, and play games such as shoe-flicking and paddle boating.
4. The friends also take Li**4Cuts, which are photo stickers, with different props and poses, and write CARB Racha on them.
5. The friends have different nicknames based on their food preferences: Seungmin is Rice Boy, Hyunjin is Flour Boy and I.N is Bread Boy.
6. The friends enjoy the view of the Han River and the Olympic Stadium, and express their wish to perform there someday.