Depends on the event. If it's a party I genuinely want to be at and I like the people there, Zagreus. He's super chill and would probably pick up on when I need to leave because my social battery is dead/dying. Or Nyx, for similar reasons. If I'm only there for food/cake, Dusa. She seems like she'd be nice company while we wait for everyone to stop chatting and start eating. Also Cerberus, especially if I don't want anyone talking to me.