once they are primary students, hardly you can find time to go. if weekends are the only time to go with parents, most of the time will end up waiting in line. in terms of cost effective, it doesn\'t worth to buy annual pass. for kinder, it\'s still okay.
I usually just wait for yearly promotion for both Ocean Park and Disney, go there once a year is adequate. there are a lot more diverse activities to do once they are getting older. theme parks are less attractive and not very beneficial to children. going there once a year will become more precious.