Modifications and cancellations, including date changes must be made online. They are possible as long as the change is made 24-48 hours before the start time of the tour in accordance to its time zone.There are two ways to proceed (available only 24-48 hours before the reserved date/time):In that email, click on the link “Manage Reservation”. Look for the experience you wish to change and click on “Change Date” or “Cancel” accordingly.If changing date, select a date from the options given on the calendar and click confirm.If you are already registered with us:Login and click "My Vouchers" and then select the reservation your wish to work on.Follow steps: a.2) and a.3) above.