If it's your turn as designated driver, try a non-alcoholic margarita. Frozen or on the rocks, these easy recipes for non-alcoholic margaritas deliver the same sweet-and-sour lime punch as their alcoholic counterparts.
From Betty Crocker
Voted Best Dazzling Drink of 2008! Frozen strawberries add a berry-best twist to classic margaritas!
From Diabetic Living
This alcohol-free "cocktail" looks like its tequila-laced counterpart. And it's perfect for dieters--just 58 calories per drink.