Best airport transfer options from BIA (Colombo) and pre-arrival advice?

Pre-arranged hotel pickup is often the smoothest option, especially if arriving late or with family/luggage. Official airport taxis are available and regulated. Ride-hailing apps work but can have variable wait times. Avoid unsolicited offers from touts outside the terminal. Have some Sri Lankan rupees for small expenses (ATMs are available). SIM cards can be purchased at the airport. Customs and immigration are generally straightforward for tourists. Keep your arrival card and passport easily accessible. Many hotels can arrange reliable transfers if you contact them in advance with flight details. The journey to Colombo or south coast takes 1-2+ hours depending on traffic and destination.