I know you have to get the plan corresponding to the number of nights you stay. I thought it is tied to your room key, so is it valid after you check out? We are arriving late the first day, so it would count as a day for the plan. Can we use what credits we have left for the last day, as we are leaving fairly late after checkout. I imagine we would have a CS left, and we were planning on doing a water park that day until time to leave, and would probably eat there as well.