The idea of the party is that you pay a certain price (usually 100-200 quid).  The merchant will bring over an assortment of chocolate and wine.  Than you and your lady will have a chance to sample the chocolate, wine and the pairings. This is a great way to show her that you want to spend the day with her AND give her chocolate.  This is really the best of both worlds!

The chocolate tasting will usually tell you to try a certain chocolate and will tell you what you should be tasting.  These chocolates will be of the highest quality and should be delightful to taste!

If you're in a smaller center than this might not be availble to you.  In this case consider joining (or signing her up) the Hotel Chocolat Tasting Club.  The tasting club is an assortment of chocolates delivered to your house monthly for a small fee.  It's a great gift that keeps on giving!