Iowa Code § 717D.4: Penalties.

1. Except as provided in section 717D.2, subsection 10, a person who violates a provision of this chapter commits a class “D” felony.

2. A person who violates section 717D.2, subsection 10, by acting as a spectator of a contest event conducted in this state commits the following:

a. An aggravated misdemeanor for the first offense.

b. A class “D” felony for a second or subsequent offense.