Hi Telexstar, I'll prepare some stuff on the Bolivian 4WD tour for you soon..!
As for NZ, I'm obviously biased on the Queenstown area!
Here's some tips around the QT area I posted earlier:
The Routeburn is a great hike, and one of the neatest things they don't tell you is it's dead easy to catch a bus taking 1hr to Milford Sound at the end of the Routeburn trek - thereby saving a lot of time and getting you there in time for a later afternoon cruise when all the crowds have gone...
If you're interested in this, I can give you further logistics! And if you're a good hiker, you can do the RB in 2 days, staying at Mackenzie Hut.
As for other natural must-sees in NZ, the following are my favourites:
1: The one day Tongariro Crossing is awesome (so long as its clear!)
2: Abel Tasman is lovely, but the Queen Charlotte is also nice and quieter
3: For me, Coromandel was nicer than the Bay of Islands
4: Fjordland is fantastic and if you have time the Doubtful Sound overnighter is a highlight.
5: The hiking areas around Glenorchy are some of my favourite places on Earth! (and less than an hour's drive from Cameralabs HQ!)
6: Kaikora is a nice spot and good for whale spotting
7: For penguins and albatross, check out the Dunedin peninsula
And I haven't even mentioned Rotorua... there really is so much to see in this country, and such variety!
And probably the best tip I can give for anyone travelling through NZ on a budget are the BBH hostels
- most are really nice and cost about $60 NZ a night. If you like the sound of them, I can recommend ones in certain locations...