Carol Danvers: Oh, she was there. Definitely joking and totally not flinging toppings. She's too mature for that.
Bucky Barnes: Clearly, he was dragged by Enid and hung out near her and Wednesday. He probably eventually went to bother Steve and others throughout the gathering.
Claire Temple: Claire showed up later to hang and laugh and try to tie cherry stems with her tough. Get your heads out of the gutter!
David Rose: He would show up to show up, but he was only eating one scoop. And maybe another. And another. Don't judge, it's delicious!
Ron Weasley: He definitely came to hang with Hermione and Harry. He would have come even if they didn't because it's free ice crea!
Nancy Wheeler: She came to socialize with other young adults. She probably stuck closer to people she knew, though. Feel free to interact!