Most military installations have an MWR Leisure Travel Services, usually located at the mini-mall near clothing and sales. They offer discounted tickets to many local attractions as well as vacation deals. I recently learned that they also provide discounted movie gift cards to the local movie theater. Fort Leonard Wood's Leisure Travel Services offer a $30 gift card for $25 to the local B&B movie theater. That is about 16% off. That is not bad seeing how movie theaters can often be quite pricey.
Find your local MWR Leisure Travel Service and ask if they offer any discounts before purchasing tickets.