I was going to say take a lover who you meet between 17:00 and 19:00 daily, but I see you've already ruled that one out 
If you decide to be the sort of French person who likes walking, climb a mountain and have a picnic. This must consist of a baguette, a whole (or at least half) saucisson sec, a bottle of red wine and maybe a hip flask of something stronger. All to be served with a cloth (of course!), little wine glasses and a wicked-looking knife. Alternatively you could be the sort of French person who would not be seen dead up a mountain, in which case see the previous tips about handbag dogs and wearing black, which would be more up your rue.
When parking your car, it is acceptable to do any of the following, as necessary:
- Shunt backwards and forwards, banging against the cars in front and behind until you have your car perfectly as you like it
- Leave your car with the bumper resting neatly on top of the one behind it
- Park diagonally across the corner of the street
Get your DH a blazer in a pretty shade of emerald green, cherry red or pink.
Refuse to drink tap water, even if there is nothing whatsoever wrong with it. Instead you must buy bottled water, or take empty bottles to fill up at the local mineral water fountain (which may be shaped like a giant mushroom).
Make liberal use (especially men) of the words: Insupportable, inadmissible, inacceptable, preferably while thumping your fist on the table. (This last one courtesy of my old French teacher).
If you work in a school, drink red wine with water with your lunch. (Unless you are head of English, in which case you can drink it neat, and copiously.) The rest of the time, drink coffee that looks like ink in thimble-sized glasses.