Place all of the prepared vegetables into a large bowl. Do not add feta at this point.
Mix the dressing in a small bowl and then pour over vegetables and stir well.
Cover bowl and place in the fridge. This salad can be made earlier in the day.
Add feta just before serving. OR our family leaves on the side and each person can add if they like it or can tolerate feta. Leaving it on the side also allows the salad to last longer in the fridge.