1 14 cups premium tequila
1 14 cups frozen cranberry juice concentrate, thawed
1 cup canned jellied cranberry sauce
10 tablespoons fresh lime juice
6 tablespoons orange liqueur (like Grand Marnier)
Blend ingredients in blender until smooth. Transfer to large glass measuring cup. Pour half of Margarita base into blender. Add 3 1/2 cups ice cubes. Blend until mixture is slushy; pour into salt-rimmed margarita glasses. Garnish with fresh cranberries. Repeat with remaining Margarita base and 3 1/2 cups ice cubes.