YPlumbrite, I'm not sure if I have come across you before but I am from NZ also.
My Mum 73 has moderate Alzheimers and Dad has cognitive impairment.
Have you been assigned a Key Worker from Alzheimers Society? Key Worker is a great sounding board.
Have you had Needs Assesment done through your DHB?
I have attended a Carers Support group a couple of times, but it now clashes with my hours of work.
My employer gave me time off to attend a 4 week Carers course also.
I know how how hard it must be though, as to do all this you need someone to stay with your wife.
Through Alzheimers Society they can put you in touch with the right people to arrange a carer to stay with your wife if no other means through family or friends.
There is a cost I think, and this is where a Needs Assesment can be done to see if your wife qualifies, for you to be granted up to 28 days a year Carers Support payments which is approx $76 a day to help pay for these costs.
Your wife would also qualify for Disability Support payments ( are you retired? ) to help pay for extra medical costs, St John alarm etc.
In my case my parents live behind us in their own home.
Mum goes to an Alzheimers activity group 2 days a week, which we are lucky that the lady that takes it, picks Mum up and drops her off. Otherwise you are meant to find your own transport!
Dad gets several breaks from Mum, a week through Alzheimers group and myself.
My time out is when I'm at work, which I have recently cut back to 3 days.
Enliven, is another organisation which runs day care groups for people with health disabilities but in particular with early/moderate dementia. They also provide transport, but this has to be approved via your Needs Assesment Team. I am looking at this for Mum in the New Year, as she has no Alzheimers Acitivity group for 5 weeks as the co-ordinator is on holiday! Bizarre when you think about it. No one else to take it, and Mum needs something to go to as she gets agitated when cooped up at home too long.
If you do have family or friends that can help stay with your wife while you have some much needed time out, nows the time to call on their help.
Even more harder if you are in a rural area of NZ?