I'm going to be spending 4 days in Paris, Versailles, and Reims with my girlfriend. Neither me or my girlfriend wants to roam. We don't really need any voice minutes, but rather want a prepaid data card. The hotels we're staying have free wifi so I don't need that much data. I just want to occasionally check e-mails and check-in with either FB or FS. Does anyone here have any suggestions on who to go with? We'll be arriving at Gare Du Nord from London's St. Pancras Station.

Also, will the prepaid sim card that we get in Paris work in either Versailles and Reims? What about Luxembourg City? We're also going to be there for a day before returning to Paris.

Thx for the help in advance.