Keep in mind that rather than paying for WiFi access in train stations such as Montparnasse, you can walk next door to the Bibliotheque Van Damme at 80, Avenue du Maine for free WiFi access. Very handy. Check out the Mairie de Paris’s site (linked below) for free WiFi access throughout Paris at various locales (primarily gardens and libraries or local town halls).
>> This site offers great listings for places to find free WiFi in Paris, although it’s only in French – just click on an arrondissment number to get the list of places to find free WiFi.
When I looked up the 14th arrondissement, I noted that the Parc Montsouris is the closest park for WiFi access. Parc Montsouris is well worth the visit even without WiFi, but you don’t even have to go that far if you happen to be in the Montparnasse district, you can go to the Vandamme Bibliotheque located on Avenue du Maine.
Note that WiFi access is only available during the working hours for government offices. That means, for the moment, you also will be blogging – or whatever else you choose to do on the internet – for 35 hours per week. (Make sure your battery is charged. Free WiFi access is allowed. Electricity is not. Does that mean at libraries you can’t plug your computer into an outlet? I guess so.)
Free WiFi may be available in the City of Paris, but this doesn’t hold true for CDG airport. There, you have to pay, by buying a ticket at one of the book/newspaper stores for access to the local system.
You can also look up information about internet cafes in Paris, if you don’t have your own laptop with you.