The actual start time of the tours vary depending on the time of the year. (beachinncayucos.com)
If you are arriving to the hostel less than 24 hours before the departure time of the tour full payment must be made to confirm your booking. (vietnambackpackerhostels.com)
Subject to availability, visitors are permitted to make changes in the tour date and up to one hour before the start time of the tour. (beachinncayucos.com)