Staff probably do love it because they don't have to wait in queues for immigration like everyone else!
As for parking... that's a nightmare in itself. Not so much that there's not enough parking spaces, but manouevring around the carpark can be a real challenge, especially during the peak times.
What really irks me about AKL is that a) during peak times it gets far too full airside and flights often don't get parking spaces (or have to wait), and b) it actually doesn't comply with general standards. e.g. US and HK aviation authorities require flow of arriving and departing passengers to be separated. At airports like HKIA and Sydney/Brisbane, departures and arrivals are on separate levels. At Changi, KLIA and LHR, where it is same-level, there are controls at the departure gate to stop arriving passengers from entering the lounge. Yet at AKL, it is same level and open-plan, and their idea of correcting it is just to fit a few metal detectors on to the 2 gates at the end, thereby creating more trouble for itself when these 2 gates are occupied and other flights (at the request of overseas authorities) must park there, yet there is no room for them to park!
As for immigration and customs: Departures (not fast track) - 30 minutes in queue, which extends from the holding area all the way out to the entrance. Arrivals - 20 minute wait on the mezzanine above the holding area, and then another 35 minute wait for the foreign passports queue. 10 minute wait for luggage and then a 1 hour wait for MAF screening, with unhelpful airport staff who are cantankerous and crusty.
And no travelators!!