Combine first 8 ingredients in a very large plastic container. Cover and freeze at least 24 hours or until slushy.
Pour a small amount of corn syrup onto a flat plate. Pour coarse sugar onto another plate. Dip rims of margarita glasses in corn syrup; dip each glass into sugar. Pour margaritas into prepared glasses.
Freezer Note: For more convenient storage, divide Pomegranate Margaritas among zip-top freezer bags.
*Find pomegranate juice year-round in the produce section of your local grocery store.