I think the boxing day crowd is often subdued as many are "just visiting"[a bit like jail in monopoly ].For example my 25 year old son who lives in Finsbury Park and has supported Charlton all his life came to his first game of the season and was mightily disappointed.When people come to be entertained they ,wrongly,expect to be lifted by the team .Those of us who are more regular know that this team needs us to lift them.