Are you looking for an affordable vacation this summer? Visit a National Park this summer. ARAMARK Parks and Destinations just announced new discounts in conjunction with the National Service's Fee-Free Weekends. During the weekends of June 20-21, July 18-19 and August 15-16, 2009, in addition to receiving free entrance to the National Park, visitors can also get deals on tours, lodging and retail specials at select national park destinations.