Our ferry ticket was for the 9:30 AM departure. Upon arriving at the pier, we first had to go to the counter to exchange our tickets. Our return trip was scheduled for 4:30 PM, but the staff mentioned we could go to the pier earlier and take the 2:15 PM ferry, which we successfully did. The island is quite large, and if you're looking for quokkas, we recommend heading near The Bakery, as they tend to be more concentrated there.