I visited NZ in 1999 and mailed quite a few post cards back to the States. Every one of their postal centers were nice places... almost like a Hallmark card store. Lots of light and excellent merchandising. And I never, NEVER ran into a sour person working behind a counter ... counters that had a person working a point of sale machine too.
None of that USPS bull s**t that has 5-6 point of sale machines, but only one person working.