hi, will be in hong kong for 5 days. if i avail of the octopus card HKD 220/300, i can refund HKD50 deposit right? can i refund it at the airport before heading home? is the refund procedure easy and quick?
after 3 days unlimited, can i reload octopus card?
will be going to:
1) ocean park
2)disney
3) macau
on the first 3 days. will it be cheaper using octopus card than single journey pass or taxi? there are 3 of us adults.

thanks so much!