What are the “dress codes” that women, in particular, need to observe?
Indonesians are more concerned with dress codes than Westerners. However tourists are not expected to abide by all their dress code. The most formal gear that you’ll need will be slacks / modest dress and a shirt with a collar and long sleeves or a ‘good’ t-shirt with a collar. When swimming ladies may wear a 2 piece costume but if there are lots of people around a t-shirt in addition is advised.