Except for a few who have learned bad habits from foreigners, Indonesians are instinctively courteous, especially to older people.
It is polite to shake hands on meeting and taking leave. Only your right hand is used for passing food or gifts and for eating. Pointing at someone with finger, beckoning and standing with hands hips on your pockets are all seen as rude, aggressive gestures. Showing the sole of your shoe or foot is also insulting. Never touch anyone (children included) on the head.
Your legs and preferably arms as well should be covered when you enter a mosque or temple. Take off your shoes before entering a mosque.
In densely populated areas, roads are often choked with motorbikes, trucks, bicycles, wandering pedestrians and animals. Elsewhere, there’s much less traffic and driving can be pleasure. Traffic drives on the left, although some drivers only pull over at the last moment. Most major roads are well-surfaced, but in remoter and mountainous regions, they can be rough, tortuous and narrow.
Most shops open from 9 am to 9 pm every day; some close on Sunday.
Banks are open from 8 or 8.30 am at noon or 2 pm. Monday to Friday. Money changer keep longer hours.
Businesses open from 8 am to 4 pm or 9 am to 5 pm, Monday to Friday. Government offices operate from 8 am to 3 pm Monday to Thursday ; from 8 to 11 am Friday.
A service charge of 10 per cent is added to most hotel and some restaurant bills. Tipping is not expected in small local eating places. A small tip to hotel and airport porter is appropriate.
This way Indonesia by James Hardy