To all interested:

Les Brasseries Flo are all open Dec 24th-25th-26th. They have a common carte for Christmas and New Year, I have a copy for those who wish to receive it.

http://www.flobrasseries.com/

Other Restaurant open: Le Bistrot des Deux Théâtres, Rue Blanche in Paris.

As for Dec. 27th, expect quite a run in all the shops as it will be the day where many people bring back presents they received and don't like and wish to exchange...

The metro runs normally at Christmas accordng to the RATP. Last train as usual, around 00'30 hours.

Dec 31st-January 1st: Metro 1,2,4,6,9,14 will run the whole night as well as RER A&B. They warned me that they would post something on their web sites during December.