Yikes, ok. “Party-hopping” makes it sound like they didn’t actually buy tickets or know what the event was, but just came in off the street. Perhaps this is a case for ticket enforcement / bouncers? I’m reluctant to suggest a remedy based on a single example, since it sounds like the people you’re talking about arrived together, and so arguably constitute a single datapoint among them. But having someone designated to deal with “problem people” is arguably a good idea even from zero datapoints—usually this is the sort of thing a code of conduct might spell out, but I think the most basic step is having a person with extra cycles who knows it’s their responsibility to deal with this kind of thing (and who knows they have the full authority to eject people, with right of appeal if the organizers want to take those, but without having to involve a committee.)
Yikes, ok. “Party-hopping” makes it sound like they didn’t actually buy tickets or know what the event was, but just came in off the street. Perhaps this is a case for ticket enforcement / bouncers? I’m reluctant to suggest a remedy based on a single example, since it sounds like the people you’re talking about arrived together, and so arguably constitute a single datapoint among them. But having someone designated to deal with “problem people” is arguably a good idea even from zero datapoints—usually this is the sort of thing a code of conduct might spell out, but I think the most basic step is having a person with extra cycles who knows it’s their responsibility to deal with this kind of thing (and who knows they have the full authority to eject people, with right of appeal if the organizers want to take those, but without having to involve a committee.)
(We actually had ticket enforcement this time, though it’s definitely still plausible someone slipped through)