Have chance to go to Bali this summer as DH working in Indonesia. Have 5 year old twin boys who are good flyers. Thinking of renting house and staying for 4 weeks. Any top tips either on Bali or on flights? (We will be paying for me and the kids though DH will be free.) DH also thinks we whould consider Cairns for short period on way or way back but I am wary of his desire to always do too much. He is worried we may be fed up by the end of 4 weeks in Bali only. Your thoughts please.