HONG KONG ON 24 DEC TO 28 DEC 2012

Hi, We and kids (9 years old and 12 years old) are visiting HK from 24 Dec to 28 Dec. Can we know is Ocean Park and Disneyland crowded at this time of the year? We plan to visit Victoria Peak in the morning and at night. Kindly advise what kind of clothing should we bring? Thank you