getting married - xtra days off

In french it's called "congés de circonstance" or "petit chomage".
It will depend on what "commission paritaire" you belong to, but it's probably going to be 2 days in the week that you get married, depending on where and what you do for a living. There may be special situations in your office, for example règlement du travail, that may give you more or less.
The only people who could really tell you exactly are either your employer, or your mutuelle.