1Combine pineapple juice, water, tequila, orange liqueur, frozen margarita mix, and limeade in a very large plastic container. Cover and freeze at least 24 hours or until frozen to a slushy consistency.
2Moisten rims of margarita glasses with lime juice, and dip into coarse salt. Pour margarita mixture into glasses and garnish with lime wedges if desired.
3A large clean ice cream pail works great for this recipe.