go onto you room key and you can use them whenever you like. For instance, if you have the quick service dining plan for 10 nights you would have 20 meals and 20 snacks per person per day. Your room key at check-in would be loaded with 40 meals and 40 snacks and if you run out of credits by day 6 then you would pay out of pocket for the rest of your food. The number of credits is determined by the number of nights you stay, not the number of days you stay. So keep that in mind. I am not sure if you will have kids with you, but there is no distinction on your card that lets you know how many adult or child credits you have remaining. Your receipt after an order will have the total remaining, just not the breakdown of which type they are. We have used the plan before and plan to use it again in October. Hope to get it free, but we will pay for it if we must. I hope this helped. Have a great trip!