If you are going to anything in Amsterdam, visit the Heineken Brewery!
It is the best $1.50 you will ever spend. You get the tour and half way through, they give you a small cup of beer. You think, "Great, free sample but is this all?!" Don't despair, after the tour is over your guide will lead you down a corridor and through a door into a Heineken pub! There, for the next hour, you can have all the Heineken you can drink. The minute your glass is empty, a waitress will set another one in front of you. Plus, they have cheese platters on every table and you will get a Heinekin glass if it is your birthday.
Need I remind you all this for $1.50?!
There must be some kind of catch, you say. Well, there isn't but go early and get your tickets. If the next tour is at 11am, there is no way you will get tickets by going 15 minutes before. What we did is stopped by and got them at 9am for the 11am tour before going to the museum.