We are planning to stay in Paris for 5 days. We will go from CDG to 80 Avenue Georges Clemenceau, Bry-sur-Marne, Val-de-Marne, 94360, France. We will go for sightseeing during these 5 days and then take train to Milan ,Italy.
Without knowing what day of week you're traveling, the best I can suggest is the Navigo Decouverte Pass.
The Navigo Pass would include travel to Bry-sur-Marne