Ecuador's official currency is the US Dollar, making transactions straightforward for British travellers, though carrying small denomination notes is advisable for markets and rural areas. Tap water is not safe to drink outside of hotels — use bottled or purified water throughout. The altitude in Quito (approximately 2,800 metres) and higher on the route means sun protection and hydration are important even when temperatures feel mild. Tipping is customary and appreciated — a discretionary amount for guides and drivers is standard practice. Infrastructure in smaller towns can be basic, and road conditions in the highlands and rainforest can be variable, particularly after rainfall.