Throughout Dutch history there was no pressure on foreigners to learn Dutch, both officially (to live there), and in social interactions.
This means that many Dutch people have no problem speaking to you in English.
Stag parties stagger and leer past; families who realise they are definitely not at the Anne Frank House speed through; inside one window, a woman stands in her underwear.
Huge communities of foreigners exist in the city, and they almost never interact with the Dutch beyond necessities.
To give people total freedom, it seems like you have to take away any encouragement to integrate.
Socially, women feel far freer to pursue their own interests and sexual pursuits than women in comparable Western countries - it is not considered shameful to meet a guy in a club and have a one-night stand.
Amsterdam women are particularly open about their sexuality and, according to a recent survey, 84% like to experiment.