Lena’s Brood Daisy Johnson did not attend, because HYDRA. She’s probably teamed up with Ward and/or other AOS peeps to keep and eye on things. Galen Drache will be there if Keller and/or Iliana are. John Proudstar if Clarice is out of medical, he’s probably there for her. If not, he’s still hovering overprotectively, like he does. Katie Bell there with friends and a Mordecai, I’d imagine! Mara Jade has never heard or Mardi Gras, but loves a good party. Marcus Flint also likes a good party, came alone. Margo Hanson obviously is there with her boys Morgan Stark came alone, hangs out with the other teens who came Rose Hathaway there with Oliver, I assume Stefan Salvatore probably dragged by Damon and/or Alicia Sara Lance definitely not missing a good party
All of mine tried at least one of the cocktails (prob virgin ones for Morgan tho) at one point or another, so they are open for all the shenanigans!