May 26th is opening day! Splash into some fun this Summer! The Countdown is On… 123Days 15Hours 51Minutes 05Seconds Coney Island will be open to the public on Saturday, May 26th. Sunlite Water Adventure will be open all weekend from 10am-8pm. Rides & Attractions will be open on Saturday from 11am-9pm and 11am-8pm on Sunday and Monday.