Pay Now reservations are non-refundable, but can be modified anytime up to 1 hour prior to the reservation check-in time. You can also make a Pay Later reservation, which can be canceled at any time or modified. Reservations can be modified here.
Please note, if you have a Pay Now reservation and modifications result in changes to the prepaid amount, your original reservation will be refunded in full, and you will be recharged the new total.