Specific holiday-related costs, e.g. travel expenses, costs of accommodation, food and other costs like travel insurances, entrance fees, souvenirs, photo and film equipment. Durable recreation articles like caravans, tents, boats, camping equipment, etc. are not taken into account, as they cannot be attributed to one holiday, but can be used during a prolonged period of time. This also applies to the costs of renting a fixed place on a camping site or in a marina, which are also used during more than one holiday.