Vietnam Culture, Etiquette & Language Essentials (Vietnamese (Tiếng Việt))

Not expected at street-food stalls; round up 20,000–50,000 ₫ ($0.80–$2.00) at sit-down restaurants, spas, and for Grab drivers, or 100,000–250,000 ₫/day for private guides and Ha Long boat crews. Do NOT drink tap water in Vietnam; drink sealed bottled water (La Vie / Aquafina, 6,000–10,000 ₫) or boiled hotel water.