I made this for a picnic, and timed the chilling (I thought) fairly well. But, the salad was mushy. Also, I thought it had too much going on. If I made this again, I think I would chop the zucchini instead of shredding it, as this might make it stay firm a little longer. I also would probably leave the raisins or the sunflower seeds out--or maybe use plain yogurt instead of vanilla.