Lightweight breathable clothing (cotton/linen); Swimwear & beach cover-up (My Khe Beach); Light fleece for Ba Na Hills (10–15°C cooler at 1,487m); Modest attire for temples/caves (shoulders & knees covered, lightweight scarf); Walking shoes for Marble Mountain stairs & Hoi An cobblestones; Flip-flops/sandals for beach & pagodas; SPF 50+ sunscreen; DEET insect repellent (Hoi An riverside evenings); Universal adapter (220V / 50Hz Type A/C/G); Portable power bank (full Ba Na Hills day drains phones); Compact rain poncho; VND cash for street food, markets, tipping