Tradition and religion form a huge part of daily life in Bali. Keep in mind that disrespecting and ridiculing any religious custom is highly looked down upon.
A sarong or a temple scarf is essential to be tied around the waist when visiting a temple. These are usually available for rent at the entrance of the temple but you can also carry your own.
Never touch a person’s head in Bali. The Balinese people believe that the person’s soul resides at the top of the head and touching it may malign the same.
Especially for female travellers, avoiding entering Hindu temples if you are menstruating as the Hindu traditions deem it impure.
Canang Sari, the offering baskets are offered to the Creator by the Balinese people every morning. Make sure that you do not step on these or otherwise dispose of them off, it is highly disrespectful and inconsiderate to do so.
Do not interrupt or disturb any religious proceedings.