Combine 2 cups orange juice, 2 cups ice, 1/4 cup plus 2 tablespoons honey, 1/3 cup cream, 1 tablespoon orange zest, and 1/2 teaspoon vanilla in a blender and process on high speed until smooth and frothy. Pour into a pitcher. Repeat with the remaining ingredients. Pour into tall glasses, garnish each with an orange slice, and serve immediately.
Makes 2 1/2 quarts, 10 to 12 servings