浜寿司の「○○祭り」はだいたい何日ぐらい？

浜寿司の「○○祭り」はだいたい何日ぐらい？ – If she can guess all the contents of her mouth while blindfolded, she wins a prize! Ryoko (23), a beautiful slender female office worker on her way home from work, takes up the challenge!