a bit unsure about Danish claim about their immune to crowd noise. their say that they don't understand Bahasa Indonesia thus that's won't affect them. but i think the language isn't the problem, somethings goes beyond language barrier, with 8000 fans Booing against you, language doesn't really matter. WongCH in one interview says that he was slightly disturbed by the cheering during the Sony match. not sure if that made him lost focus, but it does mean the crowd can make a difference. i hope the Danes won't be too overconfidence about the crowd support (or rather, the lack of it).
I don't think Danes have said that they are immune to the noise. What they've said, at least in Danish media, is that they're going to focus on enjoying the moment instead of getting annoyed with the crowd. Don't forget that they've played TC in Jakarta before, all of them (well, except Martin-Lundgaard Hansen, but he's not a guy to disturb easily)