This is one of the more popular tourist spots in Wellington and can be very busy, especially when there are tour buses. However, it is possible to retrieve the cache if you're stealthy about it.
The cache is a mint tin. Please rehide well. For return visitors, the cache is not in the same place as the previous 360 cache (and is not near that original location).
Don't forget to check out the virtual cache GCEE0 Mount Victoria located at the top of the lookout. This is an original virtual cache, not one of the new ones.