South Carolina Code 51-3-60. Use of facilities free of charge by aged, blind, or disabled; disabled veterans; reduced rates for campsites
The term "disabled" as used herein shall mean the inability to perform substantial gainful employment by reason of a medically-determinable impairment, either physical or mental, which has lasted or is expected to last for a continuous period of twelve months or more.
Any South Carolina resident who is a veteran and who has been classified by the Veterans Administration as permanently and totally disabled may also enter any state park without charge upon presentation to the person in charge of the park of an identification card from the county veterans affairs officer stating the veteran’s permanent and total disability. A statement of age or disability may not be made for any person whose age and disability records are not maintained in the veterans affairs office at which the request is made.