Just for a try~ I think you could stay one night at the Disneyland Hotel with children so that you are allowed to visit the park for two times but just purchase one ticket. So, spend one and a half day in Disneyland.

The second afternoon, you could start from the park to Lantau Island to see the Buddha with cable of Ngong Ping 360.

The next day, go to the Ocean Park and then take bus 629 from the park to Central directly. Here you could take the tram to the Victoria Peak. Then, go the the Avenue of Stars at night. T

The fourth day, shopping in HK~