The NFL released it's "Fan Code of Conduct" for the Super Bowl (it's actually a code of conduct that went into effect at all NFL games in 2008). It lists things that fans cannot partake in at the game:

 

• Behavior that is unruly, disruptive, or illegal in nature

• Intoxication or other signs of alcohol impairment that results in irresponsible behavior

• Foul or abusive language or obscene gestures

• Interference with the progress of the game (including throwing objects on the field)

• Failing to follow instruction of stadium personnel

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• Verbal or physical harassment of opposing team fans