Although Indonesia is a secular country, many of its islands have strong cultural customs which should be observed when visiting. Java for example has a Muslim majority, while Bali is predominantly Hindu. Dressing modestly is important, and if you’re visiting temples or mosques, you should remove your shoes before entering. Use your right hand when eating, or when passing or receiving something. The left hand is considered unclean. Show respect for elders and be patient, time is a flexible concept in Indonesia. Most of all, make sure you smile, it’s considered polite, even if you have just met eyes with someone accidentally.