In addition to the rules in the general terms & conditions, Advertisers can add a few more rules for the use of the camper. They then put these in the 'house rules'. What effect do those house rules have?
The Advertiser and Goboony expect Travellers to adhere to the house rules. The house rules are part of the contract and violating these rules can possibly result in financial consequences. The house rules are also in the advertisement so that you know what the rules are before you book.
✔️ House rules ensure clarity about the use of someone's camper.
✔️ House rules are legally valid because they are included in the contract.