The DDP goes by the number of nights you stay, so if you're only booked for 2 nights, you will receive credits accordingly as you cannot add credits. If you are looking at the regular DDP that gives you 1 TS, 1 CS, and 1 snack per night, you might want to look into the deluxe DDP that gives you 3 meal credits (could be used for CS or TS) and 2 snack credits per night. If you definitely want the DDP and don't want to pay OOP for any meals, the DlxDDP would go farther than the regular DDP unless you do signature dining that requires 2 credits/meal.