Regarding who may be on the premises, managers should be aware that rules about minors:

Managers should be aware that rules about whether and where minors may be present vary by state and license type. Some licenses permit minors in dining areas of restaurants but not in bar areas; others have different restrictions. Regardless, minors may never be served alcohol. Knowing the specific rules for the establishment's license — including any areas off-limits to those under 21 — is part of a manager's compliance responsibility. Because these rules vary, managers should confirm the requirements that apply to their specific license and location.