Fee Free DaysThe National Park Service will waive admission fees on several selected dates throughout 2013. One of those dates this year will be Aug 25, 2013!
You will get free entrance to the parks but any extra fees like tours or camping fees are not included. i It is still a great way to save on a family day of fun! For more info or to see other days in the future like (9-28, or 11-9) go HERE.