Festivals have long mixed celebration with a bit of gambling, from Saturnalia's...

https://www.jelly-bookmarks.win/throughout-history-festivals-like-saturnalia-and-diwali-have-included-gambling

Festivals have long mixed celebration with a bit of gambling, from Saturnalia's dice games to Diwali’s teen patti and Lunar New Year mahjong. These traditions often relied on calendars to mark when the fun—and the risk—should end