Hi,
the 10 small rectanges like https://www.openstreetmap.org/way/1428966604, that you tagged with tourism=trail_riding_station, are problably just the 10 sandpaddock described on https://hippischcentrumlathum.nl/accommodatie/ and not trail riding stations. (A trail riding stations is a facilitiy where trail riders can stop and stay overnight on longer trail rides.) Paddocks can be tagged with  https://wiki.openstreetmap.org/wiki/Tag:landuse=animal_keeping