Only found that:
"Starting Saturday 5 of December, every Tuesday to Saturday until 24 of December, we invite you to come and try our unique chocolate creations.
What to expect: workshops and tastings, hot chocolate and personalised chocolate bars, to enjoy there and then in our gourmet tearoom, or to take away!
You will also be able to discover the Maison's emblematic collections and enjoy exclusive personalised services: custom engraving, touch & try and a cord stand."