Use fresh pressed/squeezed juices if possible for fresher flavor. Combine the rum, juices, simple syrup and bitters in a pitcher without ice. Let chill a few hours before serving to blend the flavors.
Finish the punch:
When ready to serve pour into a large pitcher, Sangria style pitcher works great, then top with the ginger ale and soda.
Fill glasses with ice and pour in punch, garnish with a pineapple wedge.
Video
Notes
Simple Syrup is a 1:1 sugar water ratio. Combine in sauce pan and boil until sugar is dissolved and mixture reduces slightly. Cool completely before using.