My name is I Nyoman Trisna Kurniawan, since 1997 I have been working at tourism industry in Bali. I am balinese people and born in Bali so I knew very well about Bali life, traditional, culture and art.
So in foreign Country, your guide or drivers, definitely your most important asset (except for money of course) He or She has more influence on the success of your holiday (or business trip) than any others factor.
A lazy driver or guide can waste your time, an unethical driver can rip you off or take advantage of you in so many ways.
Most importantly, if you dont have full confidence and trust in your driver, its a lot of more difficult to relax and have a good time constantly being on guard.
A good driver or guide will act in "your" best interest at all time and help you avoid unpleasant situation.