Wolfgang: It's not so much a case of how much drinking you can do in the 90 minutes, But how much opportunity there is for drinking beforehand.
Although, with Cardiff (Wales) now hosting major football matches, including the FA Cup Final, it becomes easy to compare the behaviour of different groups of supporters.
Rugby supporters tend to look tough, get drunk and become harmless; Football supporters can look harless, get drunk and become dangerous. And yes, I realise I am stereotyping, but it appears (in the main) true.
However, even with football supporters there appears to be less trouble than when the matches were being played at Wembley. An dthe main difference between the grounds is that Wembley was far away from everything, with one local pub, and a few burger bars. Cardif's millennium Stadium is in the city centre with at least twenty pubs/clubs within 5 minute walk. So there is no reason to rush the drinking, and then spend 15 minutes getting to the ground while 'having a go' at opposition supporters. You finish you pint, and go straight into the match.