Add frozen pineapple, lime juice, orange juice, coconut cream, and agave nectar to the blender.
Pour in ice cubes.
Blend on high speed for 30-45 seconds until smooth and slushy.
Taste and add more agave if needed for sweetness.
Pour into margarita glasses rimmed with tajin seasoning if desired.
Garnish with fresh pineapple wedges and lime wheels.
Notes
The mocktail can be made ahead and stored in the freezer for up to 2 hours before serving.For best results, use fresh pineapple frozen in chunks rather than store-bought frozen pineapple.To make it less sweet, reduce the agave nectar to 1 tablespoon.The recipe makes 2-3 servings depending on glass size.