What cultural faux pas should I try to avoid making in Batam?

"It is important to be mindful of cultural norms when visiting Batam. It is considered rude to point with your index finger, so it is best to gesture with your whole hand. It is also important to dress modestly, as showing too much skin is considered inappropriate. Additionally, it is important to be respectful of religious customs, such as not eating pork in public or entering a mosque without permission. Finally, it is important to be aware of the local language and customs, and to be respectful of the local culture," remarked another expat who made the move to Batam, Indonesia.