Hong Kong buses on general are simply amazing (besides the
simply too underpowered Darts/Dart SLFs and B6LEs). Usually you
would find Dennis Dragons, Leyland and Volvo Olympians (of which
some of the Volvos use Cummins), Tridents, B10TLs, 24.310, Neoplan
Centroliner. There are a handful of SDs, Darts, NL262, NL263
(Discovery Bay, New Lantao, Yellow Bus), NL273s (New Lantao
Bus).
There are several companies operating in HK:
Kowloon Motor Bus (Largest company with subsidary Long Win Bus, not
very useful for tourists) (mainly Kowloon, New Territories)
Citybus and sister company (mainly Hong Kong but also operates the
Kowloon Airbus routes)
New World First Bus (mainly Hong Kong and Tseung Kwan O in
NT)
New Lantao Bus (mainly Lantau)
Routes come in variations:
Suffix:
A-F: Different deviations of the route
P: Peak Hour special service
S: Special Service/Peak hour special service (if P is used)
X: Express variant
R: Recreational route (usually)
Prefix:
A: Airport routes
E: Airport routes that serve Tung Chung
X: Asia World Expo routes
N: Night route
S: Airport routes from Tung Chung
Hong Kong buses operate on a step fare basis (which existed in
the old days of SBS), ie, the fare you pay is for the whole
distance to the terminus, regradless of where you are alighting.
The fare will be displayed at the front of the bus (somewhere
around the Octopus card reader and coin box), with the bigger words
for full paying passengers and smaller words for the concession
holders. Using an Octopus card is recommended as it saves time and
money (on the MTR, and on bus-bus discounts), and can also be used
for food, parking etc)
Avoid taking cross harbour routes if possible as they are
generally more expensive than taking the Star Ferry. The MTR is
also more expensive than the bus, although most of the time
quicker. Cross harbour routes are usually operated by two operators
(KMB and either NWFB/CTB). Avoid the train (Airport Express) from
the Airport and instead check with your travel agent for any free
hotel transfer, if not, take the bus to the city or the cheapest
way, take a bus to Tung Chung and transfer to the Tung Chung
Line.