Won’t identify myself as keen to garner responses.
Person A organises free drinks at a pub near their work for a workplace hobby society they are a part of eg Watersports Club. They invite B and C from their actual work. B and C have nothing in common with the others (both female, the others aren’t; fair bit younger than the others etc) but end up staying on for drinks at the event until late into the evening. They mainly chat to each other but also mingle with the group.
Has anyone behaved inappropriately in these circumstances?