Do not think of the dining plan in terms of days. You do not get dining credits per day. That's how most think of it because you eat in the daytime, I guess. Rather, think in terms of nights. If you are on the regular plan you will get one TS, one CS and one snack credit per person for every night you stay at your resort. When you use those credits, and how, is up to you as you receive them all when you check in. You are then charged with using them all before they expire. They expire at midnight of the day you check out. If you checked in on the 15th, and checked out the 19th, that is a four night stay. Each person on the reservation age 3 and over, upon checkin, would be allotted 4 TS credits, 4 CS credits and 4 snack credits. These credits expire at midnight on the 19th and must all be used before then.