This varies per park and per holiday home. This information can be found under Facilities on the page of your park and under Features on the page of your holiday accommodation. Most parks have free Wi-Fi and the Wi-Fi code is on a kitchen cupboard. Sometimes you do pay for Wi-Fi, the costs differ per park.
The type of bed in your holiday accommodation is listed under Features. Your park web page will include this information for each type of accommodation.
For each holiday home mandatory additional costs apply. The additional costs vary per holiday home and can be found in the pop-up displayed with every price. No rights may be derived from these prices.