Hi Zismac, building=wharenui isn't an avaliable tag right now for us to use, but the most appropriate tags for Wharenui across NZ are amenity=community_centre, building=yes & community_centre=meeting_room that defines their usage & prominence better. The amenity=marae tag should only be on the marae's borders unless they are undetermined or being used for another rendering area over the top of it (eg. Kororāreka Marae in Russell). As the Wharenui's name will cover over the Marae's name upon rendering, I suggest you use addr:housename= with the name of the Marae on the Marae's Address Point & shift it out of the way but within the Area still to resolve this issue. In Hawkes Bay, I have done most of the main Maraes which serve as examples for what we must do to render in other Marae appropriately nationwide. It is possible that other Community Centres exist in the same area but community_centre=meeting_room differentiates Wharenui from any others as they are Meeting Houses after all. An example I edited is Te Papaiouru Marae in Rotorua, it also has a separate hall (Te Aomarama) as part of the Marae Area in addition to it's Wharekai which I left with only it's name & no community cenre tag to avoid confusion. For this Marae, the name of the Wharekai if it is the big building being used also as an office could be added via the official_name= tag to let it be primary displayed as an HQ office, the official_name= tag allows the building name to be hidden but still identifiable via OSM Nominatim search. These solutions will vary as each Marae in NZ is different from another. Cheers.