What cultural faux pas should I try to avoid making in Copenhagen?

"It is important to be aware of cultural norms when visiting Copenhagen. It is considered rude to be late for appointments, so it is important to arrive on time. It is also important to dress appropriately for the occasion, as dressing too casually or too formally can be seen as disrespectful. Additionally, it is important to be aware of the Danish concept of 'Jante Law', which is a set of social rules that emphasize humility and discourage boasting. Finally, it is important to be aware of the Danish concept of 'hygge', which is a feeling of coziness and contentment, and to be respectful of the Danish people's desire for privacy and personal space," said another expat in Copenhagen, Denmark.