As Brighton and Hove Albion play Crystal Palace in a promotion-chasing fixture at the Amex Stadium on Sunday, the man in charge of policing the match has warned fans not to risk the possibility of seeing their team in the Premiership.
Chief Inspector Paul Betts said: "Previous experience has shown that the intense rivalry between the two teams has tipped some previously law-abiding and responsible supporters over the edge into committing offences that have resulted in their arrests.
"We certainly don't want to take away the excitement and atmosphere of this eagerly awaited fixture, but we will isolate and deal positively with anyone whose intention is to take part in violence or any unacceptable behaviour. There is potential that both teams could be playing in the Premiership either next season or in the next few years, so why risk a football banning order, club ban or criminal record because of a moment's hot-headedness?
"Passion and rivalry are all part of football, violence and hatred should not be. Do not get involved in things you would not normally; if you see something happening, step away and walk away."
A capacity 28,500 crowd is expected for the 12 noon kick off and supporters are being reminded not to attempt to take alcohol into the ground. They can make use of the bins on the concourse outside the ground and at railway stations to deposit any containers of alcohol. Searches will be taking place and anyone found with alcohol will have it taken away, along with their match ticket. Visitors are being reminded of local legislation in Brighton and Hove and other surrounding towns banning drinking in the street.
Similarly, anyone found in possession of pyrotechnics will have them removed along with their match tickets and there's every chance that a lifetime ban will also be applied to offenders.
A pod-cast answering many questions about arrangements for the day has been produced by the Albion and Sussex Police and can be downloaded from the club and Force websites and the Crystal Palace website. On the day, there will be regular Twitter updates @sussex_police and @suspolfootball with the hashtag #seagullseagles.
Palace fans looking to make a smooth getaway from the stadium at the end of the match are reminded that a special train is being laid on from the adjacent Falmer railway station, that will whisk them direct to East Croydon. The train will depart 45 minutes after the match finishes - stewards and police will direct you to the correct platform.