Combine first 5 ingredients in a large bowl; cover and chill.
To serve, stir in carbonated beverage. Serve immediately over ice. Garnish with lime slices, if desired.
Tip: If you're having a party, combine all of the juices and water a day or two before and refrigerate. Stir in the carbonated beverage just before serving.
All-New Complete Step-by-Step Diabetic