If the issue is to do with the existing tagging not rendering or being currently undocumented, then these are issues to raise with the osm-carto devs and/or the wiki editors respectively. And in any case, lack of rendering is not a particularly good reason to tag it any differently (see https://wiki.openstreetmap.org/wiki/Tagging_for_the_renderer).

The idea in the comment above is one way forward if anyone's interested in standardising/improving holiday park tagging, and there's some discussion about Centre Parcs tagging at https://www.openstreetmap.org/changeset/154626182

I'm closing this as it's not something local mappers can assist with any further, and it's a topic probably better suited for discussion on a community channel/forum elsewhere. 