The working holiday visa is 18 - 30 - but it means you have to until 11 months in your '30th year' to apply - that's what I did.
So as long as you apply before your 30th year and 11 months, you'll be fine. You then have 12 months from the date of the visa approval to be inside NZ or the visa will expire.
For people OVER the 30/11 - there is a superduper brand new visa called the IEP which you can only apply via BUNAC. This is open to Brits only and allows you to enter NZ up until your 35!
Also, it means you are legally entitled to do both. You can apply for the WHV AND you can apply for the IEP! It's super.
My understanding on the employment limit is 3 months per employer but you can work for the maximum of 1 year on your WHV. If you have the 23 month WHV the same rules still apply - 3 months per employer and 1 year working only out of that 23 months.
We really wanted to extend our visas to the 23 month one but because I am 31 we cannot! It is ridiculous and I do not agree with it. You can apply for the 23 month visa up to 31 and activate it once in NZ I mean what is that!! You are over 30 but you can activate to 23 month one, yet you cant just extend your 12 month visa once here. It doesn't make sense.
I wish everyone could work and live wherever they wanted..
Yep ,you'll def be fine ,I got my visa 2 days before I was 31 .You get a year then before ya even have to enter the country could also have chosen to get a 2 yr visa if Id have wanted but was short on time cos I would have needed to have medicals n stuff. Hope ya have a fab time !