Combine all ingredients in a large punch bowl or pitcher and stir well. Cover and refrigerate at least 4 hours. Serve well-chilled with a good scoop of fruit floating in each drink, or serve over ice.
To make 1/2 cup simple syrup, boil 1/2 cup water and add 1/2 cup granulated white sugar. Turn heat to simmer and stir until dissolved. Turn off the heat and let cool.