I had this at my friend Catalina's Christmas party and it was very, very tasty!
6 Cups Orange Juice
2 Cups Cranberry Juice
2 Packages 10 oz frozen strawberries in syrup
3 Cups Ginger ale
2 Cups Rum (she used a strawberry flavored rum - mmmmm yum!)
Servings 18
She said it also doubles well.