Cai Yinzhou questioned the Minister for National Development about visitor trends to Sisters' Islands Marine Park, including the modes of transportation used, accessibility improvements for the public, and initiatives to enhance visitation. Chee Hong Tat reported that over 40,000 visitors have accessed Big Sister's Island since enhancements in October 2024, primarily via public ferry. A new daily boat service from Sentosa to Big Sister's Island was established in December 2025, complementing existing ferry services. Improvements include a barrier-free access route, a floating boardwalk, and wheelchair-friendly shelters, along with collaborative efforts with the Friends of Marine Park for guided activities.