01 - Bring a large pot of salted water to a boil. Cook elbow macaroni according to package directions until al dente. Drain thoroughly and rinse under cold running water to halt cooking. Transfer to a bowl and let cool completely.
02 - In a large mixing bowl, combine mayonnaise, sour cream, Dijon mustard, apple cider vinegar, sugar, salt, black pepper, and smoked paprika. Whisk vigorously until the mixture is smooth and well blended.
03 - Add the cooled macaroni, diced celery, red bell pepper, red onion, and shredded carrots to the dressing. Gently fold all ingredients together until the pasta and vegetables are evenly coated.
04 - For enhanced flavor, fold in sweet pickle relish and chopped fresh parsley. Mix gently to distribute throughout the salad.
05 - Cover the bowl with plastic wrap or a lid. Refrigerate for at least 1 hour to allow the flavors to meld and develop.
06 - Give the salad a gentle stir before serving. Taste and adjust seasoning with additional salt and pepper if needed. Serve chilled.