(1)If at any time during the period of a designated sporting event at any designated sports ground it appears to a constable in uniform that the sale or supply of intoxicating liquor at any bar within the ground is detrimental to the orderly conduct or safety of spectators at that event, he may require any person having control of the bar to close it and keep it closed until the end of that period.
(2)A person who fails to comply with a requirement imposed under subsection (1) above is guilty of an offence, unless he shows that he took all reasonable steps to comply with it.