City manager Dave Jones has appealed to all supporters to remain off the pitch following the match on Wednesday night, regardless of the outcome.
He told us, "In recent weeks we have seen a number of clubs picking up negative headlines following unwelcomed pitch invasions, ranging from Kenilworth Road, Hillsborough, Burton and Hull to name a few. We appreciate that there is a high level of excitement and tension surrounding this important match. But with the television cameras and media eyes on us, we want to ensure that the club is seen for showing passion in the correct manner.
"Since our FA Cup trips to Wembley in 2008 the reputation of our supporters has soared and we want to continue that building process on Wednesday night. Should we get the result we want, then we should look to emulate Stamford Bridge on the weekend, where the players could come back and show their appreciation for what has been done. And if it's not to be we need to respect our opponents, while keeping our reputation intact. Please play your part in the name of the club and stay off the pitch."
Chief Superintendent Bob Tooby, Divisional Commander for Cardiff, added, "I would like to thank the fans for their general good behaviour throughout the season. This hopefully reflects the excellent support that the club has and dispels the myth as to the mindless individuals who let us all down. I will have a large number of officers on duty on the play off fixture, but it my intention as the police match commander to facilitate what I know will be a family friendly event. Please work with the police and the club to stay off the pitch and enjoy the day. Many thanks for your continuous good behaviour that reflects how sporting sides at Cardiff are supported and encourage financial backing."
Gavin Megaw, The Football League's Director of External Affairs also said: "In the last week we have seen incidences at football matches where the safety of players and fellow spectators could have been compromised by fans invading the pitch. The football authorities have re-issued guidance to clubs reminding them that fans entering the field of play is a criminal offence and is unacceptable in any circumstances.
"We would encourage fans to follow this advice as it ensures that all spectators can safely enjoy going to matches and prevents their club facing possible disciplinary action from the football authorities and increased stewarding costs."