PREPARTION TIPS: Taste each cucumber before chopping it up! If you find one that has bitter skin, peel it before dicing. One of my three cucumbers, strangely, tasted bitter and I wish I had removed the skin on it before adding it to the rest.
At first, I chopped the tomatoes and cucumbers into pretty big chunks, but I later found that I enjoyed the salad more when they were chopped more finely (see the cucumber salad on top of the mixed greens). I suggest chopping them into small pieces from the beginning.
MAKE IT DAIRY FREE: Skip out on the feta.