Just a quick warning against renting a camper with Happy / Kiwi Campers - we rented a Happy Campervan for a month and were plagued the whole month with inexcusable errors and ineptitude of staff.
The first van we had, had a leaking roof vent, right over our bed - we filled a whole big saucepan from one nights rainfall. We endured the leaking van for 14 nights but not for want of trying to get the 'cowboy company' to do something (sillicon-gelling the roof is not that helpful when the whole vent is completely rotten). Eventually we swapped the van over to the 'upgraded' Kiwi camper and the stupidity and laziness of staff started to rear its ugly head once again; after running out of water in Mt Cook we discovered there was no fresh water hose, a basic and simple check of the vehicle before they let it be picked up by customers would have solved this problem! Anyway one night without water - which sucked, as everyone knows Mt Cook doesn't have any hardware stores to purchase a new hose. Also the weather was so that the pipes had frozen at the Tourist centre - so couldn't even get water there!
Next came the fun with the rusty, leaking gas bottle, which petrol station attendants refused to re-fill due to fear of explosion!
The last blow came when we arranged to drop off the van at the Auckland office; we arranged with Chris to meet him there at 7 in the morning after he said "I am happy to come in early and sort out your refund and drop you off at the airport - the least we can do" and then he doesn't show up. Leaving us wondering what the hell to do!!
All in all - a word of advice if you want an enjoyable holiday and don't want to die through gas fume inhalation - then steer well clear of this cowboy company.
We really don't want to see anyone else go through this rubbish like we had to and are still having too trying to get a refund etc.