In the traditional tomato cracker salad, many will add the crackers right before they serve it. This is because it's made with fresh juicy tomatoes, and the juice will make the crackers soggy. This salad is a bit different since it's made with cherry tomatoes. They aren't nearly as juicy, so we always just add the crackers in when we make the salad and then chill it in the refrigerator for a bit. The Ritz crackers hold up fine, but you can certainly add them right before you serve it. Either way, it's delicious!