What people may or may not tell you is that some of the best photographs out of the many one makes during a photo trip are serendipitous, and the opportunities to make them occur when one least expects them.
Here's one of my favorites so far (and I've only looked at two of my image folders...a mere fraction of the over 10,000 photographs I've made during the Bali: Island of Odalan Photo~Expedition) of an elderly Balinese woman returning to her traditional home after having emptied her basket of the morning offerings.
We were driving to one of the many temple ceremonies, and I suddenly saw the woman walking slowly towards her house. I immediately asked Komang to stop our van, and our second car also stopped. I reached for my cameras, and squeezed a few frames using the 70-200 lens, while the woman was quizzically looking at the two vehicles full of photographers, aiming their lenses at her. She never smiled...but just stood there, regally, probably muttering "Mad bule (foreigners in Bahasa)".