A local tradition stays alive when newcomers can learn how to join it.

Traditions die from opacity more often than from disinterest. The people who have always done it stop noticing how much unspoken knowledge is required: when it starts, what to bring, whether children come, who to ask, what you wear. A newcomer facing all that usually decides not to risk looking foolish and stays home. The group then concludes that nobody new is interested.

If you belong to something with a history, write down or say aloud the practical details a stranger would need. Invite one person and stand with them the first time.