Living in the DC area? Six Flags America, located in Bowie/Mitchellville, Maryland, is offering a great promotion for military families this weekend. As part of the Weekend of Remembrance organized by FamiliesUnitedUSA, Six Flags is offering a special package including admission to both Six Flags and the water park, discounted parking, free beverages, and a concert featuring Aaron Tippin and Mike Corrado, all for just $20 per person. Regular admission to the park is $49.99 per person, though discounted tickets in the $29 range are readily available.
I don't see any notations that there is a military affiliation required, it seems that this offer is available to everyone.