Chill fruit juices and 7-Up. Simmer water, sugar and cinnamon sticks together for 10 minutes. Set aside for several hours to allow the mixture to develop the cinnamon spiced flavor. Prior to serving time, remove the cinnamon sticks from the sugar syrup. In a large punch bowl, combine the sugar syrup, cranberry juice, orange juice, and lemon juice. Slowly pour in the 7-Up. Add ice-cubes and garnish with lime slices if desired.