Yes, in 2026, it is highly recommended and often necessary to pre-book your tickets for Universal Studios Singapore (USS) on Sentosa Island. The park has implemented strict daily capacity limits to ensure a better guest experience and to manage crowds during peak periods. By booking online via the official Resorts World Sentosa website or authorized travel platforms like Klook, you guarantee your entry for a specific date. During school holidays, weekends, and public holidays, the park frequently sells out of "dated tickets" well in advance, and walk-up sales at the ticket booths are often unavailable. Furthermore, purchasing in advance usually allows you to take advantage of "Early Bird" discounts and bundle deals that aren't available at the gate. If you are a fan of "skipping the lines," you should also consider pre-booking the Universal Express pass, as these are limited in quantity and often sell out even faster than the general admission tickets during the busy December and Lunar New Year seasons.