Any active duty, activated or drilling reservist, or National Guardsman is entitled to a free one time admission at either SeaWorld®, Busch Gardens®, Adventure Island®, Water Country USA®, or Sesame Place® for military personnel and as many as three direct dependants.
To save time register online, by clicking here and submitting your information. Dependents may take advantage [...]
This voucher can be used toward shipping costs, so you should be able to get at least one book completely free, including shipping. Or if you see a more expensive one you like you can grab a nice discount!