@@anshagwl it can be explore in 3-4 hours completey with express pass otherwise not possible to explore whole without pass. Studios timings are 10:30 AM to 6 PM.
Rides are included in entry ticket but depend which ticket type you purchase. There are 3 type of tickets: 1) Admission ticket with normal queue in which 1 - 2 hour of waiting. 2) admission ticket + universal express pass : This pass allows guests to skip the queue at their favorite rides and attractions for one time (5-10 mins waiting) 3) Admission ticket + Universal unlimited express pass: This pass allows guests to skip the queue at their favorite rides and attractions for unlimited times.