This link provides you information on individual MTR station facilities and in particular, whether there is a public lift (elevator) from street to concourse, and from concourse to train platform:

http://www.mtr.com.hk/eng/getting_around/disabled.html

Concessionary fares are offered for the elderly and child on most public transportation. Best to get an Octopus card for each.

Most taxis seat five except for the newer Toyota model can seat only four. It's a design change by Toyota so eventually when older taxis are replaced, they will all only seat 4 passengers.

There used to be some Nissan Cedric and Australian Ford Falcon estate (stationwagon) but have not seen any of those for a long time.

For further information on taxi service in HK:

http://www.td.gov.hk/en/transport_in...axi/index.html

Wearing of seat belt is mandatory.