Kabini safari

I’ve been planning to take my parents on a safari at Kabini , Kakanakote gate. Would be our first time. I’m wondering if it’s possible to go for the 3pm-6pm safari and then get back to Mysore the same night, is that a feasible option or is a stay for that night mandatory? And also the jeeps are fully booked for the dates that I’m looking for, do the buses provide the same experience? Or do the buses take a different route than the jeeps? Any other suggestions regarding the trip would be helpful.