Wait tekken world tour finals is in Amsterdam? How can you attend?
As for the rest of your post I'm a Amsterdam native. Here's what I know.>Are there any Michelin star restaurants?
Yeah I work for one, look up "Yamazato" if you like Japanese food. Say hi if you do.>Are there some good museums to go to?
Lots Van Gogh, Rembrandt and some modern ones but I don't like those. Amsterdam was the artistic and cultural capital of the world for over 200 years and it shows.>Is the drinking and smoking there somehow different than what I do at home?
I don't know. As a native I feel like Amsterdam is misrepresented as a "party town" since it's actually more cultural. Sure there are also a lot of clubs and all forms of drug usage are "legal" (not really legal but you won't get arrested, weed for example is illegal even in coffee shops but no one in our history has been arrested for smoking weed).
If you like art Amsterdam is 100% certain the place to be. If you like drugs without feeling shifty or afraid of police then Amsterdam is for you. If you like prostitutes without having to go to a brothel or having to deal with shady stuff, Amsterdam is for you.
What is bad in Amsterdam though are mid-range restaurants. Very cheap restaurants/snackbars are extremely good and high range Michelin star restaurants are really good. But there isn't any good stuff in between.
I've lived in Japan and all my Japanese coworkers absolutely love Amsterdam and usually don't even want to go back and they don't even speak English/Dutch. So the city must have some sort of special pull on people.