Greetings Shaking hands is uncommon and if it occurs is very brief and not firm. Women and children usually won't offer a hand.
Physical affection Hand-holding between people of two genders is fine; extreme public displays of affection, such as kissing, are not.
Clothing Despite the heat and humidity, adult men in Brunei don't tend to wear shorts in cities or towns, particularly not in restaurants. Likewise women should remember that Brunei is largely Muslim, and relatively discreet clothing that covers your shoulders and knees must be worn.
Eye contact Staring is considered extremely rude (unlike in neighbouring Malaysia).