When you pull up to the gate of the resort, you tell them your name & they let you on through. Upon check in you will receive a piece of paper that has the length of stay on it and you place that in the front dash. If you go to the parks or other resorts they see that & you get the free parking because you're resort guest.
There is a Walmart or grocery store near WDW resort area. We've always gone to the Walmart in Kissimmee for our groceries because we shop at one at home so we know what prices are going to be.
Hope this helps!
