We have booked a 4 week holiday to Australia. We were encouraged to book our car at the time of booking the holiday as we are travelling between Sydney and Melbourne. We arranged to collect the car at the airport and return on departure to the airport. On further planning the holiday we realised we do not require a car when in the cities Sydney and Melbourne. We returned to the Trail Finders office to request these changes to be told we would be charged £85 to make any changes to our holiday booking. We were not informed of this at the time of booking, although it is apparently in the contract you receive after payment. Our lesson is that trail finders are good with flight, hotels and some activities, but something like booking a car we should do ourselves. We would not have had to pay to change this.