In a blender, combine the pineapple juice, coconut milk, honey or sugar, and ice cubes. If using fresh pineapple chunks, add them now for extra flavor and texture.
Blend on high speed for 30-60 seconds, or until the mixture is smooth and frothy.
Taste the mocktail and adjust sweetness by adding more honey or sugar if desired. Blend again briefly if adjustments are made.
Pour the mixture into two chilled glasses, dividing it evenly.
Garnish each glass with a pineapple slice or a maraschino cherry on top, if desired.
Serve immediately with a straw and enjoy your tropical piña colada mocktail!