Visit the blue light district.
You could visit Eindhoven and punch me on Charlie's behalf.
Also, for the Area 51 skatepark.
^ lol. I am writing him a letter this weekend, I will ask him what exactly he wants... slap, punch, etc.
For your couple of days elsewhere... I hear good things about Berlin, you'd probably like Christiania in Copenhagen, but it's a really similar city to Amsterdam (I've been told), Barcelona, or anywhere in Switzerland. Or somewhere else? You're really into food right? Maybe France?
hit up Slovenia so you can chill at mamba's party mansion and roll out in the celeica at night
If I went there I'd probably go for two days. I'd stay in a hostel, hit up Quark for a beer and mob around the city on a bike. I'd scope some Flemish baroque shit, drink coffee, drink a few more beers, smoke some herb and go to a gallery.
Something about Amsterdam suggests its a very tolerant city if you keep it chilled, but as soon as you get too fucked, there's definitely a grip of hoodlums waiting to fleece you. Especially as an English tourist.