Prepare the pasta.
Cook elbow macaroni in boiling water until it is all at a good al dente. Rinse and drain under cold water until the water runs clear.
Dressing: In a large bowl, mix mayonnaise, mustard, salt, pepper, and a splash of lemon juice or pickle juice for a brighter taste.
Mix all elements: Add tuna, pasta celery, red onion beans (or beans), as well as pickles and chopped eggs. Mix until all the ingredients are thoroughly coated.
Chill: Cover and chill for at least 1 hour before serving. This will allow the flavors to mix perfectly.