Apart from the temples and the processions, one really should make an effort to see the final night. It is a quite extraordinary experience. Get into town around 7pm to start soaking up the atmosphere. The fireworks will already be going off. Take a walk around to get a feel for things and the procession may already be underway. Maybe take a final chance to grab some vegetarian food. Then find a good viewing spot. The clock circle outside the Metropole Hotel is a popular viewing point. The procession will be charging through under a barrage of firecrackers until around 11pm when everyone starts heading out to Saphan Hin for the final ritual.