Kids are free with the purchase of an adult admission; One child (ages 12 and under) with each full paid adult admission, limit of 6 per reservation. Discount is valid only off the full priced admission, upgrades are additional.   Not valid for groups or other special offers or discounts. Some restrictions apply.  Not valid on prior purchases or on gift certificates.  Advance reservations and payment required.  Valid at the Maryland castle only thru 9/30/2014. Must mention or enter code KFWEB.