Add the macaroni to a pot of boiling water, and cook according to the package instructions until tender.
Rinse the macaroni under cold water until cooled, and be sure to drain all of the water completely.
Place the macaroni, eggs, celery, onion and peppers into a mixing bowl, and stir to combine.
In a separate bowl, whisk together the mayonnaise, mustard, sugar, apple cider vinegar, sweet pick relish, salt and pepper. Stir until creamy.
Pour the dressing into the bowl with the salad ingredients, and toss to combine well.
Cover and chill for 2 hours before serving.