However, in the context of Latin American culture, especially in weddings and quinceañeras, it refers to the male escorts of the bride or quinceañera.
These "chambelanes" are typically young men who are friends or family members of the bride or quinceañera and they play a special role in the ceremony by accompanying her during certain parts of the event.
So, while "los chambelanes" literally means "the chamberlains," in this cultural context it has a much more specific meaning.