Hollo! Mr HongkongMan!, I cant see your reply for 2 adults & 2 children staying 4 days,3 nights at Causeway bay fr my email. Please advise the cheapest way fr HKIA to my hotel (2 ways)& we would like to visit Disneyland, Ocean Park, lady street , the peak & symphony of lights.Its advisable to buy the octopus card during our stay or buy the airport express unlimited ride for 3 days? Please advise. Thanks