Has anyone actually tried contacting Air NZ directly before about their policy on award business class seats using these points, or would anyone know the person/department/email within Air NZ to contact about it?
It would be handy to chat/email with someone who organises / decides which seats become available to star alliance partners to get a bit of an idea of the time frames / most likely routes or to see if I can request individual flights to become available.
The answer to your first question is no and no.
I suspect, as
MEL_Traveller explained, they won't tell you anything, especially since it's you trying to query inventory to be redeemed via means outside their own program. Had you been an Airpoints elite member who was trying to inquire on Business award inventory to redeem using Airpoints Dollars, the situation may be very different.
The inventory for partner awards and the inventory for Airpoints (i.e. NZ's program) awards are not necessarily the same set of seats.
There are no definitive answers to your second question, although suffice to say that, like any other airline or situation, the busiest times and routes usually follow the normal "peak" or "off peak" seasons usually defined by holidays or vacation time. For *A redemptions on NZ J in general, it's been generally viewed that getting award seats is notably difficult and requires a good lead time, especially if you go for the more popular awards, e.g. on 77W services. I had enough trouble finding awards from Asia (e.g. ex PVG, PEK or NRT) which are on 772s, not 77Ws, let alone on the even more inferior 763s out of KIX. Not to say there were no seats available in a few months, but it was more like a smattering in a couple of weeks, which made my routing decisions rather difficult as I had to match these with another connecting flight to the common port of call.
IMO 346 F and 744 F is almost identical. Sure 744 F feels a bit older but its still a nice flat bed, same TG service, same ground experience at BKK and so on. I'd be happy to fly either of those planes in F.
TG has 2 styles of 744, but I suspect the one they will use for intercontinental operations is the one with 10 F seats in the F cabin (I suspect the other style - 14 F seats in the F cabin - is an older config with older seats but used mainly on short or medium haul routes, possibly as J class instead).
Only difference is that the 744 F is in the nose, and thus will obviously be a converging cabin shape (typical of any 744 cabin located in the nose). Obviously this has implications for spacing within the cabin, though the TG 744 is spaced so that there is a table (magazine table, snack table) in the middle of the F cabin; certainly not like QF which scraps the table for 4 extra seats.
On the other hand, the 346 has only 8 seats in F, laid out as 1
a 1 | 1
a 1, where the
a is the aisle and the | is a seat divider like a low wall - there is no access between the E and F seats. See the picture below: