Activities:

Are you looking to pass the time on Saturday before the evening activities begin?  Please find several options available with or without kids:

Ardmore Community Water Park
Swimming options with the kids.
http://visitors.ardmore.org/page.php?page=1045

Lake Murray
Swimming, Horseback Riding, Boating
http://www.travelok.com/listings/view.profile/id.4358

Lakeview Golf Course
Get a round in before Saturday night!
http://www.ardmorecity.com/lakeview/lakeview.html

Casinos
Are you interested in trying your luck?  Gold Mountain Casino and WinStar World Casino are close by.
http://www.chickasaw.net/tribal_commerce/index_807.htm#Gold%20Mountain%20Casino

Military Memorial Museum
View Military displays from the American Revolution to Iraqi Freedom.
http://gshm.org/

Ardmore Regional Park
Take a look at all of the parks available for an afternoon.  Click on Parks and Recreation and city parks.
http://www.ardmorecity.com/