All disabled people with a disability of less than 75% will have to pay the full fare for the passenger's age, for those with a disability greater than or equal to 75% a free ticket is granted for the person with a disability provided that he is accompanied by a paying person. The discounts / gratuities indicated above can ONLY be granted upon presentation of a suitable certificate, in case of no-show of the certificate, the full rate will be applied. This possibility is only applicable to Hop On Hop Off tours in Italy.