Must be at least 21 to enter the property. ID presented cannot be damaged or mutilated in any way. No cameras or recording devices of any kind will be permitted. Argosy Casino Alton is a smoke-free property. Smoking available on outside decks. We are not responsible for lost, stolen, or damaged tickets, goods, or property. All ticket sales are final and non-refundable. Events subject to cancellation or change without notice.