I recommend you take Mr. E to the Nemo science museum, go in the morning so it's not so busy. It's fantastic for kids 5-12. For dinner I recommend Tujuh Maret's "rijsttafel" in the Utrechtsestraat. Go see the Waterlooplein Market in the afternoon and have a beer at Café de Sluyswacht. Great breweries to visit are Brouwerij de Prael and Brouwerij 't IJ.