Fast boats depart from the Muelle Turistico in Buenaventura (1h). Return fare is 50,000 COP and the return is valid for 15 days. A reliable company is Transporte Asturias.
Coco loco : local spirit called viche and served in a coco nut.
In the event of bad weather, the boats will not run and you'll be stuck in town for an extra day. Be careful if you have to catch a plane or are low on cash.