I thought there used to be something about Over 65 being exempt from fees, although I don't know what all that includes (all tuition, or just added fees).
From LSU's General Catalog.
LSU General Catalog 2008-2009
FEE EXEMPTIONS FOR INDIVIDUALS OVER 65
According to the provisions of Act 525 of the 1975 Louisiana legislature, individuals over 65 years of age may enroll in one or more collegelevel courses and be exempt from the payment of the University fee. Further information may be obtained from the Office of the University Registrar.