The normal voltage output in Bali is 230V and standard frequency in 50 Hz. Use a travel adaptor with surge protector for your charging plugs and hair dryers.
If you wish to avoid the crowds, either travel in the off or shoulder season or head to the less crowded landscapes of the central highlands or northern and southern beaches such as Nusa Lembongan, Nusa Penida or Amed and Tulamben.
Although a largely safe destination when it comes to food, Bali belly has been known to trouble tourists. Drink copious amounts of water, refrain from consuming local liquors and be judicious while indulging in street food and you should be OK!
Nyepi, a local Balinese festival, is observed in Bali during the month of March. Check for the dates online and strictly avoid travelling on those days as most establishments including the airport remains shut.
Dress modestly and cover your shoulders while visiting religious establishments. Religion forms the root of everyday life in Bali, make sure you avoid disrespecting any faiths.
Avoid plastic bottles at all costs, consider using glass or terracotta bottles that can be refilled.
Avoid smoking in public areas and establishments. If you must, make sure you check with the owners.
Look out for ‘Red Flags’ on the beach while swimming or surfing. These are largely believed to be unsafe and ridden with unpredictable waves.