Freeze fresh pineapple chunks until firm. In a blender, add rum, Coco Lopez, heavy cream, lime juice, the bitters and the pineapple and blend together. Add ice and blend again until creamy. If the mixture is too thick, add a few drops of cream or pineapple juice and blend until the desired consistency. Serve in a tall glass. Add a floater of dark rum, a sprinkle of nutmeg and toasted coconut and garnish with a cherry and a pineapple slices.