Obviously, for a stay in the high season, it is better to book in advance and even well in advance. Seaside resorts and other major tourist destinations are usually fully booked in July and August. When booking a pitch, a deposit is usually required in proportion to the length of stay. A handling fee is often added to this.
In the case of rental accommodation, a reservation is essential, with a deposit being paid. Unlike the deposit, the deposit allows the client and the professional to go back on their commitment. The deposit is binding and obliges the client to pay the full amount of the rental in the event of cancellation.
Also note: in addition to the reservation of a pitch or a rental unit, a tourist tax must be paid to the campsite.