Although I received the wedding invitation as a mobile invitation, I decided to go because it didn't seem right to just congratulate them and not eat the meal..ㅋㅋ
No matter how much I think about it, I feel uncomfortable being stuck between the couple, and I think my brothers would feel uncomfortable too, so I'm planning to go alone, say hello, eat, and come back.
I don't go to many weddings, so I posted this to hear the opinions of my seniors in life, and it seems like a good decision. Thank you for all the comments!