Chill glass: Start by chilling a highball glass or a large tumbler in the freezer for a few minutes.
In a cocktail shaker filled with ice, combine the white rum, blue curaƧao, lime juice, pineapple juice, and cranberry juice.
Shake vigorously for about 10-15 seconds until well chilled.
Strain the mixture into your chilled glass filled with fresh ice cubes.
Add a splash of soda water to give it a light fizz.
Garnish with a lime wheel and a maraschino cherry. For an extra touch of whimsy, add a small candy on a cocktail stick.