2 (6 oz.) cans frozen limeade, thawed
1 (6 oz.) can frozen lemonade, thawed
4 1/2 c. dark rum
4 1/2 c. water
1 tsp. sweetened reconstituted lime juice
Lime slices

Combine all ingredients, except lime slices, in a large container. Cover and freeze 12 hours or overnight. To serve, place 3 to 4 cups frozen mixture in blender. Blend until smooth. Serve immediately. Garnish with lime slices. Store remaining mixture in freezer until needed.