14 and 15th of May
Usually regional championships in France are not held in stores (I don't know of any with enough space), but by gaming clubs/ independant TOs who provide the venues. Here it was held at the Amiens Youth Hostel and organised by the Cercle des Immortels d'Amiens gaming club. The TOs usually partner with a local shop (or several) for prizes.
The regionals here are usually called by the city name (here Amiens).
The next regionals are:
Bourgoin Jaillieu 21st of May
Orleans 5th of June
Toulouse 11th of June
Paris 18th of June
Nantes 9th of July