Why are the members of the court celebrating hamlet?

In Shakespeare's "Hamlet," the members of the court celebrate Hamlet for several reasons, primarily due to his royal lineage as the son of the deceased King Hamlet. They are also eager to welcome him back to Denmark after his time in Wittenberg, viewing his return as a potential restoration of stability following the recent upheaval of the king's death. Additionally, the court may hope that Hamlet's presence will help alleviate the tension and uncertainty surrounding the throne and the political climate in Elsinore.