Just click on the Fare Rules link for the award. It lists the requirements and limitations such advance purchase, minimum stay, and seasonality restrictions (if any). There's a 60 day advance purchase (which now puts us at Aug 21 to meet it), Saturday night stay required, and an end date of September 6th. You don't have to stay 14+ days, just over a Saturday (measured from date of arrival) and return by Sept 6th. Or course, that also requires finding days with bucket availability in the lowest level (that's what the flexible dates search is good for).