Some have adapted to the tourism and had become more gung-ho and aggressive but the real Balinese is a joy to get to know. I lived in Ujung Pandang, S. Sulawesi and the Makasarese are the opposites of the Balinese but at least you know where you stand with them. Never shake hands using your left hand but always with your right. The left hand is considered unclean. I'd advise doing as much homework as you can about the Indonesian culture, it is a hodgepodge of many distinct cultures from the different language groups and tribes scattered in 5,300 islands.
Life is slower, more laid back, over there.
On the other hand, be professional in the classroom as the students will expect higher standards from you. If you can start learning Bahasa Indonesia phrases now, you'll be ahead. Bahasa In. is easy to learn. To avoid spending on private tutors, you can find someone who knows English and wants to practice so it's a reciprocal relationship that usually become close friendship with that person's family. Find out the voltage and appliance needs.