Police and the Orange Order have warned people to leave the “booze and bigotry” behind, ahead of the Order’s annual march through Glasgow later.
About 8,000 people from 182 lodges are expected to take part in the parade.
The Order will deploy specially trained stewards to free up police officers to tackle any disorder, street drinking or sectarian behaviour.
Motorists, residents, businesses and shoppers have been warned to expect delays in and around the city centre.
The Order has also agreed to an earlier finish, at 1330 BST, to its traditional Glasgow Green rally at the end of the event.
This will mean the entire march is covered by one police shift.
Ch Supt Bernard Higgins who is in charge of policing the parade said his officers would take a “zero tolerance approach” to any disorder or sectarianism from those who follow the march.
He said: “Our priority is to make sure the parade is peacefully facilitated with the safety of those taking part, the general public and my officers being paramount.
“Don’t bring booze and don’t behave like a bigot or you could find yourself spending the rest of the weekend in a cell.”
Chf Supt Bernard Higgins Strathclyde Police
“We will not tolerate anti-sectarian behaviour of any kind. Commit sectarian offences and you will be arrested.
“Don’t bring alcohol as again my officers will seize it from you and you will be given a fixed penalty fine for public drinking. This kind of behaviour is totally unacceptable and only causes fear and alarm to innocent people enjoying time in the city centre.”
Strathclyde Police has worked closely with the Grand Orange Lodge and Glasgow City Council to agree a route for the march.
Ch Supt Higgins added: “Our message is by all means come to support the parade but don’t bring booze and don’t behave like a bigot or you could find yourself spending the rest of the weekend in a cell.”
Mr Henry Dunbar, Grand Master of the Orange Order, said: “I call upon every member of the Order to enjoy the day with the utmost decorum.
“I also have a message to our more boisterous supporters: you are welcome, but please enjoy the music, colour and excitement of the march responsibly – and leave the booze at home.”
People driving in and around the city centre while the march is taking place have been advised to leave extra time for their journey or consider alternative routes for the duration of the marches.
This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.