Preheat oven to 350 degrees. In a medium mixing bowl, add dry rice plus seasoning packet, chicken broth, cream of mushroom soup, and cream of celery soup. Whisk until combined. Pour rice mixture into a greased 9-×13-inch glass baking dish. Cover dish tightly with aluminum foil and bake for 60 minutes. Remove baking dish from oven, uncover. Stir half of the chopped scallions and half of the minced parsley into rice mixture, reserving remaining scallions and parsley for garnish.