Do Amsterdam in style…rent a boat and cruise through the canals. Ditch all the tourist activities like sitting on a boat with 100 strangers being told what this and that is. Read a travel book and you will have all that info in 20 minutes. Or do all of that and then rent a boat from Sloep Delen. They have some nice boats that can easily cater groups of 5-10 people. Plan a few days in advance and then get your party together, get some iphone speakers, some wine or beer and then just cruise through the canals and enjoy the beautiful scenary!