Am I obliged to pay for bed linen for a stay?

Bed linen is a mandatory rental at Landal GreenParks. The 2020 costs for this are as follows: €8.95 per person per stay and, if applicable, cot linen is €7.50 per person per child per stay. If a cot is not standardly included in the bungalow, we will charge an extra fee for the cot rental.