If staying on points and want the dining plan do you need to purchase it for your entire stay? For example if you are staying for 5 days can you buy the plan for 3 days?
Any you would probably have to move. But if you stay at one DVC resort for three nights and another for two nights, you can purchase the dining plan for one or the other stay.
You get the plan by the number of nights you stay, not the number of days.