The services offered by UGOTRAVEL are subject to the present terms and conditions of sale. UGOTRAVEL reserves the right to modify them at any time, with any modifications taking effect at the time of their publication on the Site. It is therefore imperative for all customers to read these conditions of sale in their entirety before confirming any reservation, and it is also recommended that customers download and/or print them in order to keep a copy. The Customer's full and unreserved acceptance of the present terms and conditions of sale is deemed to have been given prior to the validation of any reservation made on acceptance of the quotation sent by e-mail to the Customer, once the Customer has ticked "I have read and accept the terms and conditions of sale" on the sales contract attached to each quotation. In the absence of acceptance of the sales conditions, the reservation of services is impossible and invalid, which the Customer acknowledges.