523 C.M.R. 11.09
Once an individual gains entry to a venue by way of ticket, the individual shall only be readmitted after leaving if the individual presents a ticket stub or other evidence of admission and a notation by way of hand stamp or other similar marking indicating that they have been permitted to re-enter.
REGULATORY AUTHORITY
523 CMR 11.00: M.G.L. c. 147, § 46.