The nice Barrier Reef is among the 7 natural wonders of the whole world. Go snorkeling or diving to find out vivid marine daily life. They have a slightly scaled-down baggage allowance of 20kg checked and 7kg hand luggage for economy class. This goes up to 12kg (across two baggage) https://businessflightstosydneyfromlondon.business.blog/2025/02/27/get-your-business-class-air-ticket-to-hawaii-for-a-perfect-beach-vacation/