>>30328152From I've seen in the lore, having a Festival on the chuuba's birthday and her friends' birthdays is semi-common.
In Moriji, there is the Day of the Shrine, where pious families will build a miniature shrine in their home, and the local priestesses will visit the village to inspect the shrines and show their approval. The priestesses are often given gifts of sweets in exchange for their blessings.