Pour in vodka, raspberry vodka, lemonade, orange juice, and pineapple juice.
Stir well with a long mixing spoon.
Add club soda or sparkling water last, stirring gently to keep bubbles.
Taste and add simple syrup gradually until desired sweetness is reached.
Add lemon and orange slices for garnish.
Serve immediately over ice.
Notes
Adjust sweetness by reducing or increasing simple syrup. For a lighter version, use diet soda or skip the syrup. Fresh juices bring out the best flavor, but store-bought works in a pinch. Add sparkling water just before serving to keep it fizzy.