ceremonial
Related to a formal event that follows special traditions.
Ceremonial means related to a formal ceremony or ritual, especially one that follows traditional customs and has symbolic importance rather than practical purpose. When soldiers perform a ceremonial changing of the guard at a palace, they're following a precise, dignified routine that honors tradition and represents something larger than the simple act of switching shifts.
Many important positions have ceremonial duties: a mayor might cut a ribbon at a new library opening, or a queen might host ceremonial state dinners for visiting leaders. These actions don't necessarily accomplish practical work, but they mark important occasions and show respect for what matters to a community.
Schools have ceremonial moments too. At graduation, students wear special robes and march in a specific order while receiving diplomas on stage. The ceremony could technically be replaced by mailing everyone their diploma, but the ceremonial version makes the achievement feel important and memorable. Similarly, a flag-raising ceremony at the start of a school day is a ceremonial act that represents respect for the country and brings people together in a shared moment of reflection.
Sometimes ceremonial can suggest that a role has lost its real power. A ceremonial president might attend important events and sign documents but have little actual authority to make decisions. The ceremonies remain, even when the substance has changed.