We had an amazing holiday in Fiji in Mana Island resort, which offer 5 hours free babysitting a day for children under 3, and an all day kids club for older kids if you book for at least 5 days. We went when our daughter was 23 months and have only good things to say about the experience. For the under 3's its 1 to 1 care and they will do whatever you ask with your child in that time. They can leave them inside in the shade, take them to lunch or dinner, do arts and crafts or play in the playarea. At first we were nervous and just left her for an hour but she didn't want to leave. As we don't have any family to look after our daughter, this was an amazing option for us on an amazing island and gave us the chance to do some snorkelling over the reefs. I'd really recommend it to anyone. Whatsmore, the accommodation isn't super expensive, rack rates start at about $230 USD but we bought during a 50% sale on expedia.