It appears that you are going to have to be a paying member of park4night, if you go onto the site you will see a lot of the parking area's are a different colour and only available to members. Haven't looked at the price yet.
The older I get, the less I care about what people think about me. Therefore the older I get,the more I enjoy life.
No problem creating a comment in park4night with a free account. Coudn't add pictures at the time with a free account. Don't know if that was possible before. Adding a picture is ending in a loop. In the link an instruction just for windows to leave a comment. In the android P4N app that will also be possible.