If you plan on drinking, you need to bring a VALID, physical copy of a government-issued photo ID showing you are over the age of 21. People of legal drinking age will be wrist-banded upon entry.
Some shows have required age limits. Those shows will require a VALID, physical government-issued photo ID. This will be listed on the ticketing page where you purchase your tickets. Refunds will not be offered for anyone that does not meet the age limit.