Many festivals have long included gambling as part of the celebration, but...

https://www.ready-bookmarks.win/festivals-have-long-been-times-for-gambling-with-cultures-using-calendars-to

Many festivals have long included gambling as part of the celebration, but calendars helped mark a clear end to the risk. Take Saturnalia in ancient Rome or Diwali’s popular teen patti game—set dates kept the fun from spilling into everyday life