If you have a big family or travel with a private group, charter a Van is a good idea. Offers from rental companies are usually CNY 1000 a day, gas, parking and driver's meal are extra.
I found a local driver who willing to go around for CNY 480 all inclusive. But of course he is taking rebate from box offices by driving you to the tourism attractions.
Driver name: Mr. Xing 邢维敬
Car: Buick GL8
When it comes to a choice of airlines, there isn't much choice. Most airlines from Singapore fly to Hainan via either Hong Kong or China, which makes a short trip much longer. However Tiger Airways, the budget wing of Singapore Airlines, has a daily non-stop to service. It leaves around 1225 from the Budget Terminal of Changi Airport and the flight is just under four hours. It spends only 30 minutes at Haikou Airport before heading back.
The aircraft is an Airbus 320, no frills as expected so all food and drinks have to be purchased on board. They are very much against passengers who bring their own onboard so I recommend not doing so.
There is only one class, economy, and they are very strict about what your checkin bag weighs. Fifteen kilograms is all the give, but if you book online, you can pay upfront for another five kg.
The budget terminal does not have jetways so passengers have to board climbing stairs to the aircraft. If you're not fully mobile, this may pose a problem.
Also seats cannot be reserved. This means a free for all, not the most pleasant of experiences. I asked the airline about this policy and was unofficially informed that having the passengers all ready to go means the planes take off on time.
We always took the taxi from our hotel to the main shopping centres and tourist sights. Our hotel advised us to bargain for the fare rather than use the meter. But being tourists, we had no idea how much a trip would cost, so it would have impossible to bargain, not knowing what an approximate fare would be. So we decided just to use the meter as it would be easier.
We took taxis to one particular shopping centre often so we knew how much the metered fare would be. However, there was evidence of tampering in a few taxis, resulting in much higher fares, about 50% more. I was particularly incensed at one driver, and he told me just to pay him what I thought was the correct fare and to ignore the meter.
It seemed that these crooked taxis were everywhere, preying on the tourists.