If you prefer a very sweet sangria, consider making a double batch of the spiced syrup. Add half to the pitcher to start, then taste and add more to taste.
You can make Thanksgiving sangria up to 4 hours in advance, but longer storage makes the fruit become soggy and discolored. You can make the spiced simple syrup up to 1 week in advance. If you want to make the pitcher in advance, you can mix up everything but the fruit and refrigerate, then add the fruit 1 to 4 hours before serving.
