For those who book the visit on Tripadvisor paying in advance, it is possible to cancel your reservation and get a refund. For those who book on booking.com, there is no advance payment, but it is still possible to cancel the reservation.
For those who book the visit on Tripadvisor paying in advance, it is possible to cancel your reservation and get a refund. For those who book on booking.com, there is no advance payment, but it is still possible to cancel the reservation.