Orange Wedding Punch

3 cups granulated sugar
3 cups water
2 large cans orange juice plus water to prepare
1 (46 ounce) can pineapple juice
1 small can frozen lemonade concentrate plus water to prepare
2 quarts ginger ale or 7-Up

Boil the sugar and water and let cool. Add remaining ingredients.

To make ahead, add the ginger ale just before serving.