I need some advice on getting around in Paris and France, specifically with the trains and metro. I've read about various passes and tickets for the metro in Paris, and am not sure which would best suit our itinerary and needs. We will be arriving in Paris on a Sunday morning and will likely just take a taxi from CDG to our Airbnb. Below is our schedule:
Sunday - Wednesday: In Paris (Zones 1-3) and RER to Versailles
Thursday - Sunday: TGV Trains from Paris down to Tours, then Tours up to Normandy, and then back to Paris.
Monday-Thursday: Paris (Zones 1-3), RER to Disneyland Paris, then train to CDG Airport
I've read about the Navigo Pass but I'm gathering those are only good starting on a Monday through Sunday, so it sounds like that wouldn't be the most convenient when we are in Paris. As you can see, our time in Paris will be split up so would getting a carnet of tickets each time be the best? Do those work for the RER trains? I live in Seattle where we use an "Orca' card that easily tracks metro transfers for you so I would love something similar in Paris where we don't have to worry too much about having physical tickets and figuring out where they are valid or losing them, etc. We also plan on walking a lot and possibly also using the Velib rentals across the city if they are easy to use and really accessible.
The trains we will be taking to/from Paris when traveling outside of the city look like they are TGV trains which I gather need to be reserved in advance?
Thank you in advance for your suggestions!