3 naval oranges, sliced into thin rounds
4 lemons, sliced into thin rounds
4 limes, sliced into thin rounds
juice from 1-2 limes, enough to yield 1/3 cup juice
6 large mint leaves
2/3 cup agave nectar syrup (or simple sugar syrup; for recipe go to www.theyummylife.com/recipes/48)
1/2 cup tequila
1 750-ml bottle (approx. 3 cups) dry white wine, chilled
2 cups lemon-lime soda, chilled
1 750-ml bottle (approx. 3 cups) champagne or sparkling white wine
margarita salt (optional), chilled