My brother arrived in Cape Town, and so it was great to take the girls to an amusement park with rollercoasters as I could then take a back seat as he stood in for me. We visited Ratange Junction in Century City and I would recommend it as a great day out for the kids. The girls did not go on the Cobra but they did enjoy the Vortex, the Carousel, the Bumper Cars but their favourite was the water ride: the Monkey Falls! So my recommendation is start there, as we only found it at the end of an already long day!