Indonesia

Good to know

• Active volcanoes — Indonesia sits on the Ring of Fire and has many active volcanoes (Bromo, Ijen, Agung). Before any trek, check the official status at magma.esdm.go.id, rely on local guides and respect closed zones: access can shut without warning.
• Earthquakes and tsunamis — Earthquakes are frequent and coasts are exposed to tsunamis. On the coast learn the evacuation routes and, after a strong quake or a sudden retreat of the sea, move inland or to high ground immediately.
• Transport and apps — Traffic in Bali and Java's cities is heavy: allow generous margins for flights and ferries. Get around town with the Gojek and Grab apps (bikes, cars, food, payments), cheaper and clearer than unofficial taxis.
• Driving and scooters — Driving is on the left. Scooters are handy but risky in chaotic traffic: you need an international licence and a helmet, and many insurers won't cover motorbike accidents without a licence valid for two-wheelers.
• Temples and etiquette — At temples cover shoulders and knees and wear a sarong (often provided at the entrance). Don't step on the offerings (canang sari) left on pavements, and use your right hand to give and receive. Remove shoes where indicated.
• Water and stomach — Don't drink tap water: bottled only, and be careful with ice and raw food in rougher spots. The classic "Bali belly" is common: bring probiotics and an anti-diarrhoeal, plus a good mosquito repellent against dengue.
• Tipping — Not mandatory but appreciated: in restaurants 5-10% if not already included (some add a "service charge"). A small tip for guides and drivers is customary.