Unfortunately, Thrill Experiences is unable to amend existing bookings.
Given that the service provider will have already reserved a spot for you and potentially arranged logistics for the day's event, it is recommended that you contact them as soon as possible if you need to change the date.
To reschedule, please reach out directly to the service provider. Their details are in your booking confirmation email or in your booking details within My Account. Please be aware, however, that depending on their terms and conditions, they may impose a rebooking or cancellation fee.