Which aspect to the carnival season is most important to the events of the story in The Cask of Amontillado?

The aspect of deception and betrayal is most important to the events of the story in "The Cask of Amontillado." Montresor deceives Fortunato by pretending to be his friend, enticing him with the promise of Amontillado, all while harboring a deep-seated desire for revenge. This atmosphere of deception and manipulation, heightened by the celebration of the carnival season, sets the stage for Montresor's sinister plan to entomb Fortunato alive.