I’ve been there! Very cool experience to have some of their food products (hamburger and fries in the case of my son in law) delivered via tube. Great coffee too.

Their website. (I love that the exterior picture includes a “visitor”)

Oh hey, something from my home town.

The main things they have going for them is nostalgia and a funky aesthetic (and clever marketing designed to attract tourists); there are plenty of places in Christchurch that do better food and there are certainly better places if all you want is good coffee. They are a 7.5/10 in a city full of 9/10 cafes - I won’t shoot you down if this is where you want to go, but it probably isn’t going to be my first pick

The food was good. Bathrooms behind secret doors. Recommend.