I think you will, because we found that with the large amount of food you get on the dining plan, you simply don't have room for an additional dessert/snack item during the day. In 8 days of the
DDP, we generally used CS credits for lunch and TS credits for dinner. 4 of us typically shared 2 yoghurt parfaits from the BCV store for breakfast (so 2 snack credits used) and then used the other credits for water. We had 6 left over for our group on the last day, and we stocked up on water and snacks for the plane.
With the DDP, you are getting a huge lunch with dessert, and then 5-6 hours later, a huge dinner with appetizer and dessert. So it becomes, how much can you eat?? ARound 4 or 5 p.m., I might have considered an ice cream bar or something, if I didn't have a TS reservation for that night, but since we always did, we saved our appetites. And given that we "rolled" out of the restaurant each night, getting more dessert items after dinner was out of the question.
One thing to consider is having 1 or 2 people in your party order the large bottled water as their drink for the CS, then you have it to carry around with you. 2 people can order the LARGE sodas, which are more than enough to share. THey are HUGE. That's what we did, and therefore didn't have to burn all of our snack credits on waters.