In Chocolat, at the end of the story, how does Vianne celebrate the chocolate ceremony and change Lansquenet-sous-Tannes's people's ideology?
Vianne plans her "grand festivale du chocolat" for Easter Sunday. She prepares for it for weeks ahead of time. Anouk and her friends make the posters and flyers and the entire town knows about it. For this festival, she makes special candies and decorates the window of the chocolate shop with all of the tempting goodies. Instead of creating traditional Easter candies, however, Vianne also includes depictions of pagan deities, corn goddesses, etc. Most of the townspeople by this time are on Vianne's side. They join in and help her with the preparations. There are still a few, however, that are on Francis' side and distribute flyers all over town that say "Church, not Chocolate". It does not work and even Francis is forced to give up temporarily. He says he is not going to oppose Vianne any longer.
The chocolate festival has brought the town together, and the people realize now that life should be joyful, it does not have to be dull and full of guilt. Armande throws a huge party for her birthday, and after she has a great time with everyone in town, even her snooty daughter, she peacefully dies. Josephine has left her abusive husband and winds up getting together with Roux. Everyone decides that there is nothing wrong with enjoying delicious chcolate and, after all, Easter Sunday is supposed to be a celebration of Christ's rising from the dead. The people of the town are transformed by the magic of Vianne's chocolate.