Chromo
please take all these points into consideration
Avole-excellent points, and most will apply to a non biking trip as well

Chromo, in my opinion, taking points like these into consideration and seriously is a given when planning a trip like this. Being both aware and planning ahead of time for possible eventualities is part of the "plan for the worst, hope for the best" attitude to responsible trip prep.

I absolutely agree on eating in popular frequented eateries, this was my rule in Latin America.

Last point, if you end up biking, use mirrors and hone your constant glancing into them, and being extremely situationally aware at all times.
i use a Take-a-look mirror mounted on my helmet visor. Visors help a lot with strong sun.
Daydreamy riding is not recommended--again, I'm relating to my experiences in other parts of the world, not asia.