i am planning to visit sentosa island on 13th May 2014 and wish to visit the aquarium, universal studios and maybe 2-3 more attractions. Do i need to book online and get ticket before going or can i get ticket from the gate? can i get i pass that allow me to do all these attractions or do i need to buy seperate tickets for each attraction? what are other best attractions - 3 adults are going from Sri LAnka. thank you.