In a punch bowl, combine lychee syrup, white grape juice, pineapple juice, cranberry juice, lime juice, and lychee juice (if using).
Stir well with a wooden spoon until the liquids are combined.
Add lemon-lime soda, ginger ale, club soda, and coconut water. Stir gently to retain fizz.
Mix in grenadine, cherry juice (if using), vanilla syrup, and a splash of orange juice if desired.
Add whole lychees, sliced berries, and lightly muddled mint leaves to the punch.
Drop in a cinnamon stick for a subtle spice note (optional).
Carefully add dry ice using tongs (optional) for a spooky bubbling effect. Wait until it fully dissolves before serving.
Ladle into glasses, making sure to include floating fruit and avoid dry ice particles.
Serve chilled and enjoy!