In a large pitcher, stir together white wine, apple cider, vodka, caramel syrup and vanilla until fully blended.
Add apples and cinnamon sticks to pitcher.
Chill sangria for 2-4 hours. Taste and add more caramel syrup if needed.
Before serving, combine cinnamon and granulated sugar on a small plate. Brush glass rims with caramel sauce or caramel syrup and then place upside-down in cinnamon sugar mixture to coat rims.
Fill glasses with ice and pour sangria. Top each glass with a seltzer water for a little fizz.