 During the credits we see that the Mushroom Kingdom is celebrating the  defeat of Smithy by holding a parade.  As Luigi leads the parade  (yes, Luigi makes a cameo in this game), we see humorous scenes that  involve Bowser and his minions fixing the castle, Booster with his new wife  Valentina and her henchman Dodo, Johnathan Jones and his crew on his ship,  prince Mallow with his real parents, and finally Mario and Peach together.  The sky turns dark and the Mushroom peoples costumes glow a la Disneyland  electrical parade and it shows the Mushroom castle (resembling "Sleeping  Beauty castle") and ends with fireworks (another Disneyland reference).  How many fireworks you bought in Mole village determines which firework  is shown.  The whole thing ends when Geno returns to his home in the stars,  while the music from the original "Super Mario Bros" game plays.