This only includes the idolVerse
Yeonjun and Chan
Skz invited their partners they did come but they didn't need the plus 1 since Yeonjun and Chan wanted Catch! To be there. Everyone was able to attend except for Kelsey, Jia, and Jiwon.
Hyunjin and Han brought their girlfriends Danbi and Kira as plus 1s since they weren't as close with Chan or Yeonjun
Danbi and Hyunjin
Danbi invited the entirety of Starship and Hyunjin invited Skz. HyunA was there. She had gotten close to HyunA shortly after debut because of her being Kiras step sister. Hyunjin and Danbi both agreed that they didn't want plus 1s so it was just a small group of people. Skz, Starship, HyunA, and Nabi from Catch!
Kira and Han
Pretty much the same as Danbi and Hyunjin but they allowed plus 1s so everyone brought someone. (Manly consisting of Catch!)
Julie and Felix
They never got married. They eloped instead. The only people who were there were Jisungs and Julies sisters and Chan. He had gotten ordained online so he could officiate.
Nabi and Seungmin
So many people were there just because of the size of the groups they invited. Itzy, skz, Catch!, Xdinary Heroes, Fairy, Nmixx, and NiziU. (Twice doesn't exist in this universe but we're replaced my Catch!)
Garam and I.N
Small family wedding in Busan. I.Ns direct family was there, so his two brothers, his parents, and grandparents. Garam had Chan, her little sister Hannah, her younger brother Lucas, her parents, and grandparents. Yeonjun, Marley, Lily and Amy Marrow came because of how close they are to the family. They also brought pets so Berry and Garams dog Rosie were there. (Rosie is a golden retriever that lives in the Catch! dorms.)