Put the gallon of Hawaiian Punch, Sprite and pineapple juice into the refrigerator overnight to get cold.
Once cooled, pour Hawaiian Punch, Sprite, and pineapple juice into a large punch bowl and gently stir. Using a spring-loaded ice cream scooper, scoop lime sherbet into punch. Allow the sherbet to melt slightly before serving (to add more flavor.)
To serve, dip the top of each glass in water then dip into the red sanding sugar, pour in party punch and pop in a straw.