Let's see....
Cake event: awards grossly over enchanted weapons to the winner, XP, SP for everyone else. All you had to do was show up, hit the cake.
Cake replacement event: XP only, no item, no SP. Oh, let's add Talismans of Fate so people can spend $500 on virtual items as well.
The "ultimate celebration" will be when WOW classic buries y'all again in August without pay 2 win.