Some of the bigger more popular, often a bit more fancy tramping huts (not this old classic one ) have an online booking system to prevent overcrowding and people missing out on bunks. But I don't think that's what you really meant...
Edit: the real well known " must do" tracks like the Milford...
Bealey hut is an old classic basic sheep musterer hut. Up until 1978 they grazed 6000 sheep up here, now it's a tramping hut or as you Yankee folks would say, hiking hut. 6 bunks, very old school.
View from the back of camper van right now.
@Chuck D. Bones yup limestone and yes just been over the hill to Christchurch and back.
Castle hill is about 1hour 15min drive from our place.
https://www.doc.govt.nz/parks-and-recreation/places-to-go/canterbury/places/kura-tawhiti-castle-hill/
Another one from the trip:
Rain forest this side of...
Here's my incarnation.
I have never gelled with compressors so far, maybe with the exception of the Orange Squeezer, which to me was more a loose boost with character rather than a classic compressor.
This one might sway things different for me, it works great and I will live in the lower range...