Violet H.
Yelp
If you are coming from the Central Business District, take the 8 bus (Lyttleton) from the Lichfield bus interchange. It's NZ$4 cash. It drops you off literally a few steps away from the door to the facility. (Take the 8 bus Airport to get back to downtown.) The trip was maybe 15 minutes because I went during an off-time.
It was an overcast day, so there were only a few people there. No waiting, and I had the car to myself in both directions. Despite the clouds and haziness, there were still views to be had.
The gondola moves slowly so people can get on and off. It can be slowed down even more, and staff can even kind of stop it for you for a moment. One car could fit six adults. There are a few bumps, especially as you start out, and when you go over the towers. Sometimes the cars stop for a few minutes. If you are apprehensive, the worst parts are as you get started, especially coming down.
Both buildings are accessible, with ramps and a lift at the top. The hardest part is getting in and out of the gondola. However I don't know what they can do if you use a wheelchair or must have a walker or rollator. You should check with them in advance if any of these applies to you.
Up top, you enter (and exit) through the gift shop. It's actually a good-sized and nice gift shop. I left some money there. The toilets are here (and there are toilets at the bottom, too).
At the bottom is a drink vending machines. The cafe's at the top, upstairs from the gift shop. There are stairs from the gift shop. The lift (elevator) is around the corner by the gondolas.
There are observation decks at both levels. Several trails of varying lengths start off from the observation deck at the lower level.
The cafe had a good selection and the food was good. My ham and cheese toastie was good. You can enjoy adult beverages there, too. There's a seating area in front and even a larger seating area around back.
The parking lot seemed big, but on a clear day in high season, I imagine it can get full quickly.