Place the vanilla bean and insides, water and sugar in a small saucepan and bring to a boil.
Reduce heat to low and simmer until thick and syrupy. Let cool.
In a large pitcher or punch bowl, combine the juices and the syrup. R
efrigerate until just ready to serve.
Just before serving, add in the champagne, sliced oranges and cranberries.
Serve chilled and/or over ice!